bluuebunny/arxiv_metadata · Datasets at Hugging Face

id string	submitter string	authors string	title string	comments string	journal-ref string	doi string	report-no string	categories string	license string	abstract string	versions list	update_date timestamp[ms]	authors_parsed list
1406.4031	John ZuHone	J. A. ZuHone (NASA/GSFC, U. Maryland), M. W. Kunz (Princeton), M. Markevitch (NASA/GSFC), J. M. Stone (Princeton), V. Biffi (SISSA)	The Effect of Anisotropic Viscosity on Cold Fronts in Galaxy Clusters	v1: 20 pages, 16 figures, submitted to the Astrophysical Journal. v2: fixed some typos. v3: version accepted by referee, 21 pages, 18 figures	null	10.1088/0004-637X/798/2/90	null	astro-ph.CO astro-ph.HE	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	Cold fronts -- contact discontinuities in the intracluster medium (ICM) of galaxy clusters -- should be disrupted by Kelvin-Helmholtz (K-H) instabilities due to the associated shear velocity. However, many observed cold fronts appear stable. This opens the possibility to place constraints on microphysical mechanisms that stabilize them, such as the ICM viscosity and/or magnetic fields. We performed exploratory high-resolution simulations of cold fronts arising from subsonic gas sloshing in cluster cores using the grid-based Athena MHD code, comparing the effects of isotropic Spitzer and anisotropic Braginskii viscosity (expected in a magnetized plasma). Magnetized simulations with full Braginskii viscosity or isotropic Spitzer viscosity reduced by a factor f ~ 0.1 are both in qualitative agreement with observations in terms of suppressing K-H instabilities. The RMS velocity of turbulence within the sloshing region is only modestly reduced by Braginskii viscosity. We also performed unmagnetized simulations with and without viscosity and find that magnetic fields have a substantial effect on the appearance of the cold fronts, even if the initial field is weak and the viscosity is the same. This suggests that determining the dominant suppression mechanism of a given cold front from X-ray observations (e.g. viscosity or magnetic fields) by comparison with simulations is not straightforward. Finally, we performed simulations including anisotropic thermal conduction, and find that including Braginskii viscosity in these simulations does not significant affect the evolution of cold fronts; they are rapidly smeared out by thermal conduction, as in the inviscid case.	[ { "version": "v1", "created": "Mon, 16 Jun 2014 14:32:55 GMT" }, { "version": "v2", "created": "Tue, 17 Jun 2014 13:15:02 GMT" }, { "version": "v3", "created": "Fri, 2 Jan 2015 22:14:42 GMT" } ]	2015-06-22T00:00:00	[ [ "ZuHone", "J. A.", "", "NASA/GSFC, U. Maryland" ], [ "Kunz", "M. W.", "", "Princeton" ], [ "Markevitch", "M.", "", "NASA/GSFC" ], [ "Stone", "J. M.", "", "Princeton" ], [ "Biffi", "V.", "", "SISSA" ] ]
hep-th/0502135	Eugeny Babichev	E. Babichev and M. Kachelriess	Constraining cosmic superstrings with dilaton emission	10 pages, 3 figures; v2: Fig 1 is corrected	Phys.Lett. B614 (2005) 1-6	10.1016/j.physletb.2005.03.053	MPP-2005-11	hep-th astro-ph	null	Brane inflation predicts the production of cosmic superstrings with tension 10^{-12}<G\mu<10^{-7}. Superstring theory predicts also the existence of a dilaton with a mass that is at most of the order of the gravitino mass. We show that the emission of dilatons imposes severe constraints on the allowed evolution of a cosmic superstring network. In particular, the detection of gravitational wave burst from cosmic superstrings by LIGO is only possible if the typical length of string loops is much smaller than usually assumed.	[ { "version": "v1", "created": "Tue, 15 Feb 2005 13:06:49 GMT" }, { "version": "v2", "created": "Fri, 6 May 2005 15:28:54 GMT" } ]	2009-11-11T00:00:00	[ [ "Babichev", "E.", "" ], [ "Kachelriess", "M.", "" ] ]
1410.7099	Valery A. Lunts	Michael Larsen and Valery A. Lunts	Rationality of motivic zeta function and cut-and-paste problem	Comments and welcome	null	null	null	math.AG	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	Assuming the positive solution to the Cut-and-paste problem we prove that the motivic zeta function remains irrational after inverting L.	[ { "version": "v1", "created": "Sun, 26 Oct 2014 23:51:08 GMT" } ]	2014-10-28T00:00:00	[ [ "Larsen", "Michael", "" ], [ "Lunts", "Valery A.", "" ] ]
1403.4348	Mathieu Huruguen	Mathieu Huruguen (UBC)	Special reductive groups over an arbitrary field	21 pages. Comments welcome	null	null	null	math.AG	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	A linear algebraic group G defined over a field k is called special if every G-torsor over every field extension of k is trivial. In 1958 Grothendieck classified special groups in the case where the base field is algebraically closed. In this paper we describe the derived subgroup and the coradical of a special reductive group over an arbitrary field k. We also classify special semisimple groups, special reductive groups of inner type and special quasisplit reductive groups over an arbitrary field k.	[ { "version": "v1", "created": "Tue, 18 Mar 2014 05:27:55 GMT" } ]	2014-03-19T00:00:00	[ [ "Huruguen", "Mathieu", "", "UBC" ] ]
2311.03878	Andrej Vilfan	Abdallah Daddi-Moussa-Ider, Ramin Golestanian and Andrej Vilfan	Hydrodynamic efficiency limit on a Marangoni surfer	17 pages, 5 figures	J. Fluid Mech. 986 (2024) A32	10.1017/jfm.2024.363	null	physics.flu-dyn cond-mat.soft	http://creativecommons.org/licenses/by/4.0/	A Marangoni surfer is an object embedded in a gas-liquid interface, propelled by gradients in surface tension. We derive an analytical theorem for the lower bound on the viscous dissipation by a Marangoni surfer in the limit of small Reynolds and capillary numbers. The minimum dissipation can be expressed with the reciprocal difference between drag coefficients of two passive bodies of the same shape as the Marangoni surfer, one in a force-free interface and the other in an interface with surface incompressibility. The distribution of surface tension that gives the optimal propulsion is given by the surface tension of the solution for the incompressible surface and the flow is a superposition of both solutions. For a surfer taking the form of a thin circular disk, the minimum dissipation is $16\mu a V^2$, giving a Lighthill efficiency of $1/3$. This places the Marangoni surfers among the hydrodynamically most efficient microswimmers.	[ { "version": "v1", "created": "Tue, 7 Nov 2023 10:51:26 GMT" }, { "version": "v2", "created": "Tue, 13 Feb 2024 12:25:06 GMT" } ]	2024-05-15T00:00:00	[ [ "Daddi-Moussa-Ider", "Abdallah", "" ], [ "Golestanian", "Ramin", "" ], [ "Vilfan", "Andrej", "" ] ]
cond-mat/0512286	Masayuki Hase Oka	M. O. Hase and S. R. Salinas	Dynamics of a mean spherical model with competing interactions	null	J. Phys. A 39, 4875 (2006)	10.1088/0305-4470/39/18/007	null	cond-mat.soft	null	The Langevin dynamics of a $d$-dimensional mean spherical model with competing interactions along $m\leq d$ directions of a hypercubic lattice is analysed. After a quench at high temperatures, the dynamical behaviour is characterized by two distinct time scales associated with stationary and aging regimes. The asymptotic expressions for the autocorrelation and response functions, in supercritical, critical, and subcritical cases, were calculated. Aging effects, which are known to be present in the ferromagnetic version of this model system, are not affected by the introduction of competing interactions.	[ { "version": "v1", "created": "Tue, 13 Dec 2005 22:19:24 GMT" }, { "version": "v2", "created": "Fri, 24 Mar 2006 16:00:52 GMT" }, { "version": "v3", "created": "Thu, 20 Apr 2006 18:19:43 GMT" } ]	2009-11-11T00:00:00	[ [ "Hase", "M. O.", "" ], [ "Salinas", "S. R.", "" ] ]
2404.01213	Weijun Zhang	Jing Gao and Weijun Zhang and Zhitao Zhang	Bifurcation on Fully Nonlinear Elliptic Equations and Systems	comments are welcome!	null	null	null	math.AP math.FA	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	In this paper, we study the following fully nonlinear elliptic equations \begin{equation} \left\{\begin{array}{rl} \left(S_{k}(D^{2}u)\right)^{\frac1k}=\lambda f(-u) & in\quad\Omega \\ u=0 & on\quad \partial\Omega\\ \end{array} \right. \end{equation} and coupled systems \begin{equation} \left\{\begin{array}{rl} (S_{k}(D^{2}u))^\frac1k=\lambda g(-u,-v) & in\quad\Omega \\ (S_{k}(D^{2}v))^\frac1k=\lambda h(-u,-v) & in\quad\Omega \\ u=v=0 & on\quad \partial\Omega\\ \end{array} \right. \end{equation} dominated by $k$-Hessian operators, where $\Omega$ is a $(k$-$1)$-convex bounded domain in $\mathbb{R}^{N}$, $\lambda$ is a non-negative parameter, $f:\left[0,+\infty\right)\rightarrow\left[0,+\infty\right)$ is a continuous function with zeros only at $0$ and $g,h:\left[0,+\infty\right)\times \left[0,+\infty\right)\rightarrow \left[0,+\infty\right)$ are continuous functions with zeros only at $(\cdot,0)$ and $(0,\cdot)$. We determine the interval of $\lambda$ about the existence, non-existence, uniqueness and multiplicity of $k$-convex solutions to the above problems according to various cases of $f,g,h$, which is a complete supplement to the known results in previous literature. In particular, the above results are also new for Laplacian and Monge-Amp\`ere operators. We mainly use bifurcation theory, a-priori estimates, various maximum principles and technical strategies in the proof.	[ { "version": "v1", "created": "Mon, 1 Apr 2024 16:12:56 GMT" } ]	2024-04-02T00:00:00	[ [ "Gao", "Jing", "" ], [ "Zhang", "Weijun", "" ], [ "Zhang", "Zhitao", "" ] ]
1410.7453	Cody Hyndman	Cody B. Hyndman and Menachem Wenger	GMWB Riders in a Binomial Framework - Pricing, Hedging, and Diversification of Mortality Risk	41 pages, 11 figures; This paper combines a previous version titled "Pricing and Hedging GMWB Riders in a Binomial Framework" (arXiv:1410.7453v1) and the working paper titled "Diversification of mortality risk in GMWB rider pricing and hedging"	null	null	null	q-fin.PR q-fin.CP	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	We construct a binomial model for a guaranteed minimum withdrawal benefit (GMWB) rider to a variable annuity (VA) under optimal policyholder behaviour. The binomial model results in explicitly formulated perfect hedging strategies funded using only periodic fee income. We consider the separate perspectives of the insurer and policyholder and introduce a unifying relationship. Decompositions of the VA and GMWB contract into term-certain payments and options representing the guarantee and early surrender features are extended to the binomial framework. We incorporate an approximation algorithm for Asian options that significantly improves efficiency of the binomial model while retaining accuracy. Several numerical examples are provided which illustrate both the accuracy and the tractability of the binomial model. We extend the binomial model to include policy holder mortality and death benefits. Pricing, hedging, and the decompositions of the contract are extended to incorporate mortality risk. We prove limiting results for the hedging strategies and demonstrate mortality risk diversification. Numerical examples are provided which illustrate the effectiveness of hedging and the diversification of mortality risk under capacity constraints with finite pools.	[ { "version": "v1", "created": "Mon, 27 Oct 2014 22:42:48 GMT" }, { "version": "v2", "created": "Wed, 6 Jul 2016 16:30:53 GMT" } ]	2016-07-07T00:00:00	[ [ "Hyndman", "Cody B.", "" ], [ "Wenger", "Menachem", "" ] ]
2207.05555	Changjian Fu	Changjian Fu, Shengfei Geng, Pin Liu	Exchange graphs of cluster algebras have the non-leaving-face property	null	Bulletin London Math. Soc. (2023), 55, 2062-2069	10.1112/blms.12836	null	math.RA math.CO	http://creativecommons.org/licenses/by-nc-nd/4.0/	The claim in the title is proved.	[ { "version": "v1", "created": "Sat, 9 Jul 2022 02:14:38 GMT" } ]	2024-02-15T00:00:00	[ [ "Fu", "Changjian", "" ], [ "Geng", "Shengfei", "" ], [ "Liu", "Pin", "" ] ]
1707.05340	Meng Wang	Meng Wang, Jiaheng Zhang, Jun Liu, Wei Hu, Sen Wang, Xue Li, Wenqiang Liu	PDD Graph: Bridging Electronic Medical Records and Biomedical Knowledge Graphs via Entity Linking	9 pages,5 figures,accepted by ISWC 2017	null	null	null	cs.DB cs.AI cs.IR	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	Electronic medical records contain multi-format electronic medical data that consist of an abundance of medical knowledge. Facing with patient's symptoms, experienced caregivers make right medical decisions based on their professional knowledge that accurately grasps relationships between symptoms, diagnosis and corresponding treatments. In this paper, we aim to capture these relationships by constructing a large and high-quality heterogenous graph linking patients, diseases, and drugs (PDD) in EMRs. Specifically, we propose a novel framework to extract important medical entities from MIMIC-III (Medical Information Mart for Intensive Care III) and automatically link them with the existing biomedical knowledge graphs, including ICD-9 ontology and DrugBank. The PDD graph presented in this paper is accessible on the Web via the SPARQL endpoint, and provides a pathway for medical discovery and applications, such as effective treatment recommendations.	[ { "version": "v1", "created": "Mon, 17 Jul 2017 18:04:27 GMT" }, { "version": "v2", "created": "Mon, 24 Jul 2017 14:36:18 GMT" } ]	2017-07-25T00:00:00	[ [ "Wang", "Meng", "" ], [ "Zhang", "Jiaheng", "" ], [ "Liu", "Jun", "" ], [ "Hu", "Wei", "" ], [ "Wang", "Sen", "" ], [ "Li", "Xue", "" ], [ "Liu", "Wenqiang", "" ] ]
1704.06600	Casimir Ehrenborg	Casimir Ehrenborg and Mats Gustafsson	Fundamental bounds on MIMO antennas	null	IEEE Antennas and Wireless Propagation Letters 17 (1), 21-24, 2018	10.1109/LAWP.2017.2772032	null	physics.class-ph math.OC physics.app-ph	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	Antenna current optimization is often used to analyze the optimal performance of antennas. Antenna performance can be quantified in e.g., minimum Q-factor and efficiency. The performance of MIMO antennas is more involved and, in general, a single parameter is not sufficient to quantify it. Here, the capacity of an idealized channel is used as the main performance quantity. An optimization problem in the current distribution for optimal capacity, measured in spectral efficiency, given a fixed Q-factor and efficiency is formulated as a semi-definite optimization problem. A model order reduction based on characteristic and energy modes is employed to improve the computational efficiency. The performance bound is illustrated by solving the optimization problem numerically for rectangular plates and spherical shells.	[ { "version": "v1", "created": "Thu, 13 Apr 2017 12:07:02 GMT" }, { "version": "v2", "created": "Wed, 03 May 2017 09:23:46 GMT" }, { "version": "v3", "created": "Tue, 15 Aug 2017 11:59:37 GMT" }, { "version": "v4", "created": "Wed, 24 Jul 2019 09:30:45 GMT" } ]	2025-09-23T00:00:00	[ [ "Ehrenborg", "Casimir", "" ], [ "Gustafsson", "Mats", "" ] ]
1308.1754	Chanda Jog Dr.	Chanda J. Jog	Q criterion for disc stability modified by external tidal field	7 pages, 3 figures, submitted to MNRAS	null	null	null	astro-ph.GA astro-ph.CO	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	The standard Q criterion (with Q > 1) describes the local stability of a disc supported by rotation and random motion. Most astrophysical discs, however, are under the influence of an external gravitational field which can affect their stability. A typical example is a galactic disc embedded in a dark matter halo. Here we do a linear perturbation analysis for a disc in an external field, and obtain a generalized dispersion relation and a modified stability criterion. An external field has two effects on the disc dynamics: first, it contributes to the unperturbed rotational field, and second, it adds a tidal field term in the stability parameter. A typical disruptive tidal field results in a higher modified Q value and hence leads to a more stable disc. We apply these results to the Milky Way, and to a low surface brightness galaxy UGC 7321. We find that in each case the stellar disc by itself is barely stable and it is the dark matter halo that stabilizes the disc against local, axisymmetric gravitational instabilities. This result has been largely missed so far because in practice the value for Q for a galactic disc is obtained in a hybrid fashion using the observed rotational field that is set by both the disc and the halo, and hence is higher than for a pure disc.	[ { "version": "v1", "created": "Thu, 8 Aug 2013 04:33:21 GMT" } ]	2013-08-09T00:00:00	[ [ "Jog", "Chanda J.", "" ] ]
2402.11562	Jian Zhu	Wei Ding, Rui Zhang, Tianning Chen, Shuai Qu, Dewen Yu, Liwei Dong, Jian Zhu, Yaowen Yang, Badreddine Assouar	Origin and Customization of Bandgap in Chiral Phononic Crystals	7 pages, 4 figures	null	null	null	physics.app-ph	http://creativecommons.org/licenses/by/4.0/	The wave equation governing the wave propagation in chiral phononic crystals, established through force equilibrium law, conceals the underlying physical information. This has led to a controversy over the bandgap mechanism. In this letter, we theoretically unveil the reason of this controversy, and put forward an alternative approach from wave behavior to formulate the wave equation, offering a new pathway to articulate the bandgap physics directly. We identify the obstacles in coupled acoustic and optic branches to widen and lower the bandgap, and introduce an approach based on spherical hinges to decrease the barriers, for customizing the bandgap frequency and width. Finally, we validate our proposal through numerical simulation and experimental demonstration.	[ { "version": "v1", "created": "Sun, 18 Feb 2024 12:13:05 GMT" } ]	2024-02-20T00:00:00	[ [ "Ding", "Wei", "" ], [ "Zhang", "Rui", "" ], [ "Chen", "Tianning", "" ], [ "Qu", "Shuai", "" ], [ "Yu", "Dewen", "" ], [ "Dong", "Liwei", "" ], [ "Zhu", "Jian", "" ], [ "Yang", "Yaowen", "" ], [ "Assouar", "Badreddine", "" ] ]
2310.19658	Noah Ziems	Noah Ziems, Gang Liu, John Flanagan, Meng Jiang	Explaining Tree Model Decisions in Natural Language for Network Intrusion Detection	Accepted to NeurIPS XAIA Workshop 2023	null	null	null	cs.CL cs.AI	http://creativecommons.org/licenses/by/4.0/	Network intrusion detection (NID) systems which leverage machine learning have been shown to have strong performance in practice when used to detect malicious network traffic. Decision trees in particular offer a strong balance between performance and simplicity, but require users of NID systems to have background knowledge in machine learning to interpret. In addition, they are unable to provide additional outside information as to why certain features may be important for classification. In this work, we explore the use of large language models (LLMs) to provide explanations and additional background knowledge for decision tree NID systems. Further, we introduce a new human evaluation framework for decision tree explanations, which leverages automatically generated quiz questions that measure human evaluators' understanding of decision tree inference. Finally, we show LLM generated decision tree explanations correlate highly with human ratings of readability, quality, and use of background knowledge while simultaneously providing better understanding of decision boundaries.	[ { "version": "v1", "created": "Mon, 30 Oct 2023 15:40:34 GMT" } ]	2023-10-31T00:00:00	[ [ "Ziems", "Noah", "" ], [ "Liu", "Gang", "" ], [ "Flanagan", "John", "" ], [ "Jiang", "Meng", "" ] ]
1307.2300	Sergei Yurchenko	Emma J. Barton, Sergei N. Yurchenko and Jonathan Tennyson	ExoMol line lists II: The ro-vibrational spectrum of SiO	MNRAS (in press)	MNRAS 434, 1469-1475 (2013)	10.1093/mnras/stt1105	null	astro-ph.SR physics.chem-ph	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	Accurate rotation-vibration line lists are calculated for silicon monoxide. Line lists are presented for the main isotopologue, $^{28}$Si$^{16}$O, and for four monosubsituted isotopologues ($^{29}$Si$^{16}$O, $^{30}$Si$^{16}$O, $^{28}$Si$^{18}$O and $^{28}$Si$^{17}$O), in their ground electronic states. These line lists are suitable for high temperatures (up to 9000 K) including those relevant to exoplanetary atmospheres and cool stars. A combination of empirical and \textit{ab initio} methods is used: the potential energy curves are determined to high accuracy by fitting to extensive data from the analysis of both laboratory and sunspot spectra; a high quality {\it ab initio} dipole moment curve is calculated at the large basis set, multi-reference configuration interaction level. A partition function plus full line lists of rotation-vibration transitions are made available in an electronic form as supplementary data to this article and at \url{www.exomol.com}.	[ { "version": "v1", "created": "Mon, 8 Jul 2013 23:10:38 GMT" } ]	2013-09-27T00:00:00	[ [ "Barton", "Emma J.", "" ], [ "Yurchenko", "Sergei N.", "" ], [ "Tennyson", "Jonathan", "" ] ]
1406.4619	Alexandre Chotard	Alexandre Chotard (INRIA Saclay - Ile de France, LRI), Martin Holena	A Generalized Markov-Chain Modelling Approach to $(1,\lambda)$-ES Linear Optimization: Technical Report	null	null	null	null	cs.NA cs.LG cs.NE	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	Several recent publications investigated Markov-chain modelling of linear optimization by a $(1,\lambda)$-ES, considering both unconstrained and linearly constrained optimization, and both constant and varying step size. All of them assume normality of the involved random steps, and while this is consistent with a black-box scenario, information on the function to be optimized (e.g. separability) may be exploited by the use of another distribution. The objective of our contribution is to complement previous studies realized with normal steps, and to give sufficient conditions on the distribution of the random steps for the success of a constant step-size $(1,\lambda)$-ES on the simple problem of a linear function with a linear constraint. The decomposition of a multidimensional distribution into its marginals and the copula combining them is applied to the new distributional assumptions, particular attention being paid to distributions with Archimedean copulas.	[ { "version": "v1", "created": "Wed, 18 Jun 2014 06:58:38 GMT" } ]	2014-06-19T00:00:00	[ [ "Chotard", "Alexandre", "", "INRIA Saclay - Ile de France, LRI" ], [ "Holena", "Martin", "" ] ]
1707.07301	Xi Li	Shanshan Zhao, Xi Li and Omar El Farouk Bourahla	Deep Optical Flow Estimation Via Multi-Scale Correspondence Structure Learning	7 pages, 3 figures, 2 tables	null	null	null	cs.CV	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	As an important and challenging problem in computer vision, learning based optical flow estimation aims to discover the intrinsic correspondence structure between two adjacent video frames through statistical learning. Therefore, a key issue to solve in this area is how to effectively model the multi-scale correspondence structure properties in an adaptive end-to-end learning fashion. Motivated by this observation, we propose an end-to-end multi-scale correspondence structure learning (MSCSL) approach for optical flow estimation. In principle, the proposed MSCSL approach is capable of effectively capturing the multi-scale inter-image-correlation correspondence structures within a multi-level feature space from deep learning. Moreover, the proposed MSCSL approach builds a spatial Conv-GRU neural network model to adaptively model the intrinsic dependency relationships among these multi-scale correspondence structures. Finally, the above procedures for correspondence structure learning and multi-scale dependency modeling are implemented in a unified end-to-end deep learning framework. Experimental results on several benchmark datasets demonstrate the effectiveness of the proposed approach.	[ { "version": "v1", "created": "Sun, 23 Jul 2017 14:08:54 GMT" } ]	2017-07-25T00:00:00	[ [ "Zhao", "Shanshan", "" ], [ "Li", "Xi", "" ], [ "Bourahla", "Omar El Farouk", "" ] ]
2204.00849	Weizhe Lin	Weizhe Lin, Linjun Shou, Ming Gong, Pei Jian, Zhilin Wang, Bill Byrne, Daxin Jiang	Transformer-Empowered Content-Aware Collaborative Filtering	null	null	null	null	cs.IR	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	Knowledge graph (KG) based Collaborative Filtering is an effective approach to personalizing recommendation systems for relatively static domains such as movies and books, by leveraging structured information from KG to enrich both item and user representations. Motivated by the use of Transformers for understanding rich text in content-based filtering recommender systems, we propose Content-aware KG-enhanced Meta-preference Networks as a way to enhance collaborative filtering recommendation based on both structured information from KG as well as unstructured content features based on Transformer-empowered content-based filtering. To achieve this, we employ a novel training scheme, Cross-System Contrastive Learning, to address the inconsistency of the two very different systems and propose a powerful collaborative filtering model and a variant of the well-known NRMS system within this modeling framework. We also contribute to public domain resources through the creation of a large-scale movie-knowledge-graph dataset and an extension of the already public Amazon-Book dataset through incorporation of text descriptions crawled from external sources. We present experimental results showing that enhancing collaborative filtering with Transformer-based features derived from content-based filtering outperforms strong baseline systems, improving the ability of knowledge-graph-based collaborative filtering systems to exploit item content information.	[ { "version": "v1", "created": "Sat, 2 Apr 2022 12:33:23 GMT" } ]	2022-04-05T00:00:00	[ [ "Lin", "Weizhe", "" ], [ "Shou", "Linjun", "" ], [ "Gong", "Ming", "" ], [ "Jian", "Pei", "" ], [ "Wang", "Zhilin", "" ], [ "Byrne", "Bill", "" ], [ "Jiang", "Daxin", "" ] ]
2507.15571	Matheus Filipe Santos Alves	Matheus F. S. Alves, L.G. Medeiros, Davi C. Rodrigues	Gravitational waveforms from inspiraling compact binaries in quadratic gravity and their parameterized post-Einstein characterization	10 pages	null	null	null	gr-qc	http://creativecommons.org/licenses/by/4.0/	We investigate gravitational waveforms from the inspiral phase of compact binary systems within the framework of quadratic gravity and map their deviations from general relativity into the parameterized post-Einstein (PPE) formalism to constrain the theory parameters. Quadratic gravity generically includes a massive spin-2 ghost, which leads to ill-defined energy and angular momentum fluxes. Following earlier proposals, we remove these unphysical features by imposing a constraint on the massive spin-2 mode, restricting it to propagate only the same polarizations of general relativity. Within the quadrupole approximation, we derive the radiative degrees of freedom, including massless and massive tensor modes, as well as a massive scalar field. Using the stationary phase approximation, we compute the Fourier-domain waveform of the massless tensor modes and extract the phase corrections. For small deviations from general relativity, we show that both the scalar and massive tensor modes can be consistently embedded into the PPE framework, extending previous results that considered only scalar fields. We derive updated constraints on the parameters of quadratic gravity, finding bounds improved by three orders of magnitude compared to existing limits. Finally, we present forecasts for the sensitivity of the Einstein Telescope to these deviations.	[ { "version": "v1", "created": "Mon, 21 Jul 2025 12:52:31 GMT" } ]	2025-07-22T00:00:00	[ [ "Alves", "Matheus F. S.", "" ], [ "Medeiros", "L. G.", "" ], [ "Rodrigues", "Davi C.", "" ] ]
2504.12189	Kiljae Lee	Kiljae Lee, Yuan Zhang	Leave-One-Out Stable Conformal Prediction	Accepted at ICLR 2025	null	null	null	stat.ML cs.LG	http://creativecommons.org/licenses/by/4.0/	Conformal prediction (CP) is an important tool for distribution-free predictive uncertainty quantification. Yet, a major challenge is to balance computational efficiency and prediction accuracy, particularly for multiple predictions. We propose Leave-One-Out Stable Conformal Prediction (LOO-StabCP), a novel method to speed up full conformal using algorithmic stability without sample splitting. By leveraging leave-one-out stability, our method is much faster in handling a large number of prediction requests compared to existing method RO-StabCP based on replace-one stability. We derived stability bounds for several popular machine learning tools: regularized loss minimization (RLM) and stochastic gradient descent (SGD), as well as kernel method, neural networks and bagging. Our method is theoretically justified and demonstrates superior numerical performance on synthetic and real-world data. We applied our method to a screening problem, where its effective exploitation of training data led to improved test power compared to state-of-the-art method based on split conformal.	[ { "version": "v1", "created": "Wed, 16 Apr 2025 15:44:24 GMT" } ]	2025-04-17T00:00:00	[ [ "Lee", "Kiljae", "" ], [ "Zhang", "Yuan", "" ] ]
1211.1384	Michael Knap	Michael Knap, Enrico Arrigoni, Wolfgang von der Linden	Vibration-mediated correlation effects in the transport properties of a benzene molecule	6 pages, 3 figures	Phys. Rev. B 88, 054301 (2013)	10.1103/PhysRevB.88.054301	null	cond-mat.mes-hall cond-mat.str-el	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	We theoretically analyze correlation effects on the transport properties of a benzene molecule that are mediated by interactions between the motion of the nuclei and the transmitted charge. We focus on the lowest-lying molecular vibrational mode which allows us to derive an analytic expression for the current. The results provide transparent interpretations of various features of the highly nonlinear current-voltage characteristics, which is experimentally accessible through resonant inelastic electron-tunneling spectroscopy.	[ { "version": "v1", "created": "Tue, 6 Nov 2012 21:00:03 GMT" }, { "version": "v2", "created": "Wed, 7 Aug 2013 20:01:55 GMT" } ]	2013-08-09T00:00:00	[ [ "Knap", "Michael", "" ], [ "Arrigoni", "Enrico", "" ], [ "von der Linden", "Wolfgang", "" ] ]
2101.00951	Wasif Husain	Wasif Husain and Anthony W. Thomas	Significance of lower energy density region of neutron star and universalities among neutron star properties	6 pages, 10 figures, IOP conference paper	Journal of Physics: Conference Series 2019	10.1088/1742-6596/1643/1/012066	null	astro-ph.HE hep-th	http://creativecommons.org/publicdomain/zero/1.0/	We have constructed and compared models of rotating neutron stars and strange stars, within the Hartle framework. The significance of the low energy density region and crust region inside the neutron star has been studied, along with how much the existence of strange matter above the energy density 300 MeV/fm3 can affect the neutron star properties. We have confirmed several universalities among the neutron star properties such as, dimensionless moment of inertia vs dimensionless quadrupole moment, dimensionless tidal deformability vs dimensionless moment of inertia and moment of inertia parameters vs R/2M.	[ { "version": "v1", "created": "Sun, 27 Dec 2020 05:16:48 GMT" }, { "version": "v2", "created": "Tue, 8 Mar 2022 03:20:15 GMT" } ]	2022-03-09T00:00:00	[ [ "Husain", "Wasif", "" ], [ "Thomas", "Anthony W.", "" ] ]
2004.03625	Stephen Blundell	Franziska K. K. Kirschner, Daniel N. Woodruff, Matthew J. Bristow, Franz Lang, Peter J. Baker, Simon J. Clarke, and Stephen J. Blundell	Robustness of superconducting properties to transition metal substitution and impurity phases in Fe1-xVxSe	7 pages, 4 figures	Phys. Rev. B 100, 094527 (2019)	10.1103/PhysRevB.100.094527	null	cond-mat.supr-con	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	We have performed transverse- and zero-field muon spin rotation/relaxation experiments, as well as magnetometry measurements, on samples of Fe1-xVxSe and their Li+NH3 intercalates Li0.6(NH2)0.2(NH3)0.8 Fe1-x Vx Se. We examine the low vanadium substitution regime: x = 0.005, 0.01, and 0.02. The intercalation reaction significantly increases the critical temperature (Tc) and the superfluid stiffness for all x. The nonintercalated samples all exhibit Tc = 8.5 K while the intercalated samples all show an enhanced Tc > 40 K. Vanadium substitution has a negligible effect on Tc, but seems to suppress the superfluid stiffness for the nonintercalated samples and weakly enhance it for the intercalated materials. The optimal substitution level for the intercalated samples is found to be x = 0.01, with Tc = 41 K and {\lambda}_{ab}(0) = 0.18 {\mu}m. The nonintercalated samples can be modeled with either a single d-wave superconducting gap or with an anisotropic gap function based on recent quasiparticle imaging experiments, whereas the intercalates display multigap nodal behavior which can be fitted using s + d- or d + d-wave models. Magnetism, likely from iron impurities, appears after the intercalation reaction and coexists and competes with the superconductivity. However, it appears that the superconductivity is remarkably robust to the impurity phase, providing an avenue to stably improve the superconducting properties of transition metal substituted FeSe.	[ { "version": "v1", "created": "Tue, 7 Apr 2020 18:03:38 GMT" } ]	2020-04-09T00:00:00	[ [ "Kirschner", "Franziska K. K.", "" ], [ "Woodruff", "Daniel N.", "" ], [ "Bristow", "Matthew J.", "" ], [ "Lang", "Franz", "" ], [ "Baker", "Peter J.", "" ], [ "Clarke", "Simon J.", "" ], [ "Blundell", "Stephen J.", "" ] ]
2104.08816	Zahra Bagheri	E. Peyghan, Z. Bagheri, I. Gultekin and A. Gezer	Representations and Deformations of 3-Hom-$\rho$-Lie algebras	15 pages	null	null	null	math.RA math.AC	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	The aim of this paper is to introduce 3-Hom-$\rho$-Lie algebra structures generalizing the algebras of 3-Hom-Lie algebra. Also, we investigate the representations and deformations theory of this type of Hom-Lie algebras. Moreover, we introduce the definition of extensions and abelian extensions of 3-Hom-$\rho$-Lie algebras and show that associated to any abelian extension, there is a representation and a 2-cocycle.	[ { "version": "v1", "created": "Sun, 18 Apr 2021 11:14:02 GMT" }, { "version": "v2", "created": "Sat, 24 Apr 2021 17:37:12 GMT" } ]	2021-04-27T00:00:00	[ [ "Peyghan", "E.", "" ], [ "Bagheri", "Z.", "" ], [ "Gultekin", "I.", "" ], [ "Gezer", "A.", "" ] ]
1912.03746	Lucas Gren	Lucas Gren	A Flipped Classroom Approach to Teaching Empirical Software Engineering	IEEE Transactions on Education, Preprint December 8, 2019	null	10.1109/TE.2019.2960264	null	cs.SE	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	Contribution: A flipped classroom approach to teaching empirical software engineering increases student learning by providing more time for active learning in class. Background: There is a need for longitudinal studies of the flipped classroom approach in general. Although a few cross-sectional studies show that a flipped classroom approach can increase student learning by providing more time for other in-class activities, such as active learning, such studies are also rare in the context of teaching software engineering. Intended outcomes: To assess the usefulness of a flipped classroom approach in teaching software engineering. Application design: The study was conducted at an international Master's program in Sweden, given in English, and partially replicated at a university in Africa. Findings: The results suggest that students' academic success, as measured by their exam grades, can be improved by introducing a flipped classroom to teach software engineering topics, but this may not extend to their subjective liking of the material, as measured by student evaluations. Furthermore, the effect of the change in teaching methodology was not replicated when changing the teaching team.	[ { "version": "v1", "created": "Sun, 8 Dec 2019 19:32:17 GMT" }, { "version": "v2", "created": "Sat, 14 Dec 2019 07:03:14 GMT" } ]	2020-01-13T00:00:00	[ [ "Gren", "Lucas", "" ] ]
1407.2110	William C Ray	William C. Ray, Samuel L. Wolock, Nicholas W Callahan, Min Dong, Q. Quinn Li, Chun Liang, Thomas J Magliery and Christopher W. Bartlett	Addressing the unmet need for visualizing Conditional Random Fields in Biological Data	BioVis 2014 conference	null	null	null	cs.GR q-bio.QM	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	Background: The biological world is replete with phenomena that appear to be ideally modeled and analyzed by one archetypal statistical framework - the Graphical Probabilistic Model (GPM). The structure of GPMs is a uniquely good match for biological problems that range from aligning sequences to modeling the genome-to-phenome relationship. The fundamental questions that GPMs address involve making decisions based on a complex web of interacting factors. Unfortunately, while GPMs ideally fit many questions in biology, they are not an easy solution to apply. Building a GPM is not a simple task for an end user. Moreover, applying GPMs is also impeded by the insidious fact that the complex web of interacting factors inherent to a problem might be easy to define and also intractable to compute upon. Discussion: We propose that the visualization sciences can contribute to many domains of the bio-sciences, by developing tools to address archetypal representation and user interaction issues in GPMs, and in particular a variety of GPM called a Conditional Random Field(CRF). CRFs bring additional power, and additional complexity, because the CRF dependency network can be conditioned on the query data. Conclusions: In this manuscript we examine the shared features of several biological problems that are amenable to modeling with CRFs, highlight the challenges that existing visualization and visual analytics paradigms induce for these data, and document an experimental solution called StickWRLD which, while leaving room for improvement, has been successfully applied in several biological research projects.	[ { "version": "v1", "created": "Tue, 8 Jul 2014 14:34:14 GMT" } ]	2014-07-09T00:00:00	[ [ "Ray", "William C.", "" ], [ "Wolock", "Samuel L.", "" ], [ "Callahan", "Nicholas W", "" ], [ "Dong", "Min", "" ], [ "Li", "Q. Quinn", "" ], [ "Liang", "Chun", "" ], [ "Magliery", "Thomas J", "" ], [ "Bartlett", "Christopher W.", "" ] ]
1901.03307	Ali Ebrahimi	Ali Ebrahimi, Changyan He, Niravkumar Patel, Marin Kobilarov, Peter Gehlbach, Iulian Iordachita	Sclera Force Control in Robot-assisted Eye Surgery: Adaptive Force Control vs. Auditory Feedback	Conference paper accepted for International Symposium on Medical Robotics (ISMR) 2019, 7 pages (6 pages manuscript and 1 page reference), 7 figures, 1 table	null	null	null	cs.RO	http://creativecommons.org/licenses/by-nc-sa/4.0/	Surgeon hand tremor limits human capability during microsurgical procedures such as those that treat the eye. In contrast, elimination of hand tremor through the introduction of microsurgical robots diminishes the surgeon's tactile perception of useful and familiar tool-to-sclera forces. While the large mass and inertia of eye surgical robot prevents surgeon microtremor, loss of perception of small scleral forces may put the sclera at risk of injury. In this paper, we have applied and compared two different methods to assure the safety of sclera tissue during robot-assisted eye surgery. In the active control method, an adaptive force control strategy is implemented on the Steady-Hand Eye Robot in order to control the magnitude of scleral forces when they exceed safe boundaries. This autonomous force compensation is then compared to a passive force control method in which the surgeon performs manual adjustments in response to the provided audio feedback proportional to the magnitude of sclera force. A pilot study with three users indicate that the active control method is potentially more efficient.	[ { "version": "v1", "created": "Thu, 10 Jan 2019 18:22:59 GMT" } ]	2019-01-11T00:00:00	[ [ "Ebrahimi", "Ali", "" ], [ "He", "Changyan", "" ], [ "Patel", "Niravkumar", "" ], [ "Kobilarov", "Marin", "" ], [ "Gehlbach", "Peter", "" ], [ "Iordachita", "Iulian", "" ] ]
0804.1544	Maxim Chernodub	M. N. Chernodub, Ludvig Faddeev, Antti J. Niemi	Non-Abelian Supercurrents and de Sitter Ground State in Electroweak Theory	13 pages, no figures, JHEP style, published version	JHEP 0812:014,2008	10.1088/1126-6708/2008/12/014	UUITP-04/08, ITEP-LAT/2008-10	hep-th hep-lat hep-ph	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	We show that gauge symmetry breaking in the Weinberg-Salam model can be implemented by a mere change of variables and without any explicit gauge fixing. The change of variables entails the concept of supercurrent which has been widely employed in the study of superconductivity. It also introduces a separation between the isospin and the hypercharge, suggesting that our new variables describe a strongly coupled regime of the electroweak theory. We discuss the description of various embedded topological defects in terms of these variables. We also propose that in terms of our variables the Weinberg-Salam model can be interpreted in terms of a gravity theory with the modulus of Higgs field as dilaton and the de Sitter space as the ground state.	[ { "version": "v1", "created": "Wed, 9 Apr 2008 19:55:21 GMT" }, { "version": "v2", "created": "Tue, 2 Dec 2008 12:18:41 GMT" } ]	2009-01-01T00:00:00	[ [ "Chernodub", "M. N.", "" ], [ "Faddeev", "Ludvig", "" ], [ "Niemi", "Antti J.", "" ] ]
2508.12577	Takeshi Shinohara	Yoni Ishii and Takeshi Shinohara	Stirling polynomials and multiple zeta (star) functions at non-positive integers	19 pages	null	null	null	math.NT	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	It is known that the values of multiple zeta functions (MZFs) at non-positive integers can be expressed by Bernoulli numbers. This paper gives explicit formulas for the values of MZFs and multiple zeta star functions (MZSFs) at non-positive integers using Stirling polynomials. We also study the following two points: a connection between MZFs and MZSFs at non-positive integers and a connection between reverse values and generalized Gregory coefficients studied by Matsusaka, Murahara, and Onozuka.	[ { "version": "v1", "created": "Mon, 18 Aug 2025 02:28:21 GMT" } ]	2025-08-19T00:00:00	[ [ "Ishii", "Yoni", "" ], [ "Shinohara", "Takeshi", "" ] ]
2304.03156	Kshitij Agrawal	Sri Charan Kattamuru, Kshitij Agrawal, Shyam Prasad Adhikari, Abhishek Bose, Hemant Misra	Patch-wise Features for Blur Image Classification	Accepted in AIMLSystems2022	null	null	null	cs.CV	http://creativecommons.org/licenses/by-nc-sa/4.0/	Images captured through smartphone cameras often suffer from degradation, blur being one of the major ones, posing a challenge in processing these images for downstream tasks. In this paper we propose low-compute lightweight patch-wise features for image quality assessment. Using our method we can discriminate between blur vs sharp image degradation. To this end, we train a decision-tree based XGBoost model on various intuitive image features like gray level variance, first and second order gradients, texture features like local binary patterns. Experiments conducted on an open dataset show that the proposed low compute method results in 90.1% mean accuracy on the validation set, which is comparable to the accuracy of a compute-intensive VGG16 network with 94% mean accuracy fine-tuned to this task. To demonstrate the generalizability of our proposed features and model we test the model on BHBID dataset and an internal dataset where we attain accuracy of 98% and 91%, respectively. The proposed method is 10x faster than the VGG16 based model on CPU and scales linearly to the input image size making it suitable to be implemented on low compute edge devices.	[ { "version": "v1", "created": "Thu, 6 Apr 2023 15:39:11 GMT" } ]	2023-04-07T00:00:00	[ [ "Kattamuru", "Sri Charan", "" ], [ "Agrawal", "Kshitij", "" ], [ "Adhikari", "Shyam Prasad", "" ], [ "Bose", "Abhishek", "" ], [ "Misra", "Hemant", "" ] ]
1507.03445	Vladimir Braun M	V.M. Braun, A.N. Manashov, N. Offen	Evolution equation for the higher-twist B-meson distribution amplitude	Extended version, includes new results on the large momentum limit and a detailed study of the evolution effects in a simple model	Phys. Rev. D 92, 074044 (2015)	10.1103/PhysRevD.92.074044	DESY-15-108	hep-ph hep-th	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	We find that the evolution equation for the three-particle quark-gluon B-meson light-cone distribution amplitude (DA) of subleading twist is completely integrable in the large $N_c$ limit and can be solved exactly. The lowest anomalous dimension is separated from the remaining, continuous, spectrum by a finite gap. The corresponding eigenfunction coincides with the contribution of quark-gluon states to the two-particle DA $\phi_-(\omega)$ so that the evolution equation for the latter is the same as for the leading-twist DA $\phi_+(\omega)$ up to a constant shift in the anomalous dimension. Thus, ``genuine'' three-particle states that belong to the continuous spectrum effectively decouple from $\phi_-(\omega)$ to the leading-order accuracy. In turn, the scale dependence of the full three-particle DA turns out to be nontrivial so that the contribution with the lowest anomalous dimension does not become leading at any scale. The results are illustrated on a simple model that can be used in studies of $1/m_b$ corrections to heavy-meson decays in the framework of QCD factorization or light-cone sum rules.	[ { "version": "v1", "created": "Mon, 13 Jul 2015 13:25:08 GMT" }, { "version": "v2", "created": "Mon, 19 Oct 2015 15:26:40 GMT" } ]	2015-11-04T00:00:00	[ [ "Braun", "V. M.", "" ], [ "Manashov", "A. N.", "" ], [ "Offen", "N.", "" ] ]
cond-mat/0408386	Ravi Bhat	R. D. R. Bhat, P. Nemec, Y. Kerachian, H. M. van Driel, J. E. Sipe and Arthur L. Smirl	Two-photon spin injection in semiconductors	12 pages including 7 figures	Phys. Rev. B 71, 035209 (2005) (12 pages)	10.1103/PhysRevB.71.035209	null	cond-mat.other cond-mat.mes-hall	null	A comparison is made between the degree of spin polarization of electrons excited by one- and two-photon absorption of circularly polarized light in bulk zincblende semiconductors. Time- and polarization-resolved experiments in (001)-oriented GaAs reveal an initial degree of spin polarization of 49% for both one- and two-photon spin injection at wavelengths of 775 and 1550 nm, in agreement with theory. The macroscopic symmetry and microscopic theory for two-photon spin injection are reviewed, and the latter is generalized to account for spin-splitting of the bands. The degree of spin polarization of one- and two-photon optical orientation need not be equal, as shown by calculations of spectra for GaAs, InP, GaSb, InSb, and ZnSe using a 14x14 k.p Hamiltonian including remote band effects. By including the higher conduction bands in the calculation, cubic anisotropy and the role of allowed-allowed transitions can be investigated. The allowed-allowed transitions do not conserve angular momentum and can cause a high degree of spin polarization close to the band edge; a value of 78% is calculated in GaSb, but by varying the material parameters it could be as high as 100%. The selection rules for spin injection from allowed-allowed transitions are presented, and interband spin-orbit coupling is found to play an important role.	[ { "version": "v1", "created": "Tue, 17 Aug 2004 18:22:23 GMT" } ]	2007-05-23T00:00:00	[ [ "Bhat", "R. D. R.", "" ], [ "Nemec", "P.", "" ], [ "Kerachian", "Y.", "" ], [ "van Driel", "H. M.", "" ], [ "Sipe", "J. E.", "" ], [ "Smirl", "Arthur L.", "" ] ]
1207.5535	Rachel L. Ward	Rachel L. Ward, James Wadsley, Alison Sills, and Nicolas Petitclerc	Connecting the Dots: Analyzing Synthetic Observations of Star-Forming Clumps in Molecular Clouds	8 pages, 7 figures, Accepted for publication in the Astrophysical Journal	Astrophysical Journal 756, 119-125 (2012)	10.1088/0004-637X/756/2/119	null	astro-ph.GA	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	In this paper, we investigate the extent to which observations of molecular clouds can correctly identify and measure star-forming clumps. We produced a synthetic column density map and a synthetic spectral-line data cube from the simulated collapse of a 5000 M$_{\odot}$ molecular cloud. By correlating the clumps found in the simulation to those found in the synthetic observations, clump masses derived from spectral-line data cubes were found to be quite close to the true physical properties of the clumps. We also find that the `observed' clump mass function derived from the column density map is shifted by a factor of ~ 3 higher than the true clump mass function, due to projection of low-density material along the line of sight. Alves et al. (2007) first proposed that a shift of a clump mass function to higher masses by a factor of 3 can be attributed to a star formation efficiency of 30 %. Our results indicate that this finding may instead be due to an overestimate of clump masses determined from column density observations.	[ { "version": "v1", "created": "Mon, 23 Jul 2012 21:07:53 GMT" } ]	2012-08-23T00:00:00	[ [ "Ward", "Rachel L.", "" ], [ "Wadsley", "James", "" ], [ "Sills", "Alison", "" ], [ "Petitclerc", "Nicolas", "" ] ]
math/0703868	Lionel Levine	Lionel Levine	The Sandpile Group of a Tree	v2 incorporates referee comments, corrects references, improves notation	European Journal of Combinatorics 30(4): 1026--1035, 2009	10.1016/j.ejc.2008.02.014	null	math.CO	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	A wired tree is a graph obtained from a tree by collapsing the leaves to a single vertex. We describe a pair of short exact sequences relating the sandpile group of a wired tree to the sandpile groups of its principal subtrees. In the case of a regular tree these sequences split, enabling us to compute the full decomposition of the sandpile group as a product of cyclic groups. This resolves in the affirmative a conjecture of E. Toumpakari concerning the ranks of the Sylow p-subgroups.	[ { "version": "v1", "created": "Thu, 29 Mar 2007 07:09:27 GMT" }, { "version": "v2", "created": "Thu, 24 Jul 2008 17:01:11 GMT" } ]	2010-10-08T00:00:00	[ [ "Levine", "Lionel", "" ] ]
1206.5102	Stevenn Volant	Stevenn Volant, Caroline B\'erard, Marie-Laure Martin-Magniette and St\'ephane Robin	Hidden Markov Models with mixtures as emission distributions	null	null	null	null	stat.ML cs.LG stat.CO	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	In unsupervised classification, Hidden Markov Models (HMM) are used to account for a neighborhood structure between observations. The emission distributions are often supposed to belong to some parametric family. In this paper, a semiparametric modeling where the emission distributions are a mixture of parametric distributions is proposed to get a higher flexibility. We show that the classical EM algorithm can be adapted to infer the model parameters. For the initialisation step, starting from a large number of components, a hierarchical method to combine them into the hidden states is proposed. Three likelihood-based criteria to select the components to be combined are discussed. To estimate the number of hidden states, BIC-like criteria are derived. A simulation study is carried out both to determine the best combination between the merging criteria and the model selection criteria and to evaluate the accuracy of classification. The proposed method is also illustrated using a biological dataset from the model plant Arabidopsis thaliana. A R package HMMmix is freely available on the CRAN.	[ { "version": "v1", "created": "Fri, 22 Jun 2012 10:24:55 GMT" } ]	2012-06-25T00:00:00	[ [ "Volant", "Stevenn", "" ], [ "Bérard", "Caroline", "" ], [ "Martin-Magniette", "Marie-Laure", "" ], [ "Robin", "Stéphane", "" ] ]
1710.06268	Pierre-Henri Chavanis	Pierre-Henri Chavanis	Phase transitions between dilute and dense axion stars	null	Phys. Rev. D 98, 023009 (2018)	10.1103/PhysRevD.98.023009	null	gr-qc astro-ph.GA	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	We study the nature of phase transitions between dilute and dense axion stars interpreted as self-gravitating Bose-Einstein condensates. We develop a Newtonian model based on the Gross-Pitaevskii-Poisson equations for a complex scalar field with a self-interaction potential $V(\|\psi\|^2)$ involving an attractive $\|\psi\|^4$ term and a repulsive $\|\psi\|^6$ term. Using a Gaussian ansatz for the wave function, we analytically obtain the mass-radius relation of dilute and dense axion stars for arbitrary values of the self-interaction parameter $\lambda\le 0$. We show the existence of a critical point $\|\lambda\|_c\sim (m/M_P)^2$ above which a first order phase transition takes place. We qualitatively estimate general relativistic corrections on the mass-radius relation of axion stars. For weak self-interactions $\|\lambda\|<\|\lambda\|_c$, a system of self-gravitating axions forms a stable dilute axion star below a general relativistic maximum mass $M_{\rm max,GR}^{\rm dilute}\sim M_P^2/m$ and collapses into a black hole above that mass. For strong self-interactions $\|\lambda\|>\|\lambda\|_c$, a system of self-gravitating axions forms a stable dilute axion star below a Newtonian maximum mass $M_{\rm max,N}^{\rm dilute}=5.073 M_P/\sqrt{\|\lambda\|}$, collapses into a dense axion star above that mass, and collapses into a black hole above a general relativistic maximum mass $M_{\rm max,GR}^{\rm dense}\sim \sqrt{\|\lambda\|}M_P^3/m^2$. Dense axion stars explode below a Newtonian minimum mass $M_{\rm min,N}^{\rm dense}\sim m/\sqrt{\|\lambda\|}$ and form dilute axion stars of large size or disperse away. We determine the phase diagram of self-gravitating axions and show the existence of a triple point $(\|\lambda\|_,M_/(M_P^2/m))$ separating dilute axion stars, dense axion stars, and black holes. We make numerical applications for QCD axions and ultralight axions.	[ { "version": "v1", "created": "Tue, 10 Oct 2017 17:28:15 GMT" } ]	2018-07-18T00:00:00	[ [ "Chavanis", "Pierre-Henri", "" ] ]
quant-ph/0508212	Ulrich Mohrhoff	Ulrich Mohrhoff	Comment on "Quantum Physics from A to Z"	A comment on quant-ph/0505187 v4, 8 pages, LaTeX	null	null	SAICE/HP050811	quant-ph	null	This is a comment on a collection of statements gathered on the occasion of the Quantum Physics of Nature meeting in Vienna.	[ { "version": "v1", "created": "Mon, 29 Aug 2005 04:30:52 GMT" } ]	2007-05-23T00:00:00	[ [ "Mohrhoff", "Ulrich", "" ] ]
1205.1180	Roman Shterenberg	Yulia Karpeshina, Roman Shterenberg	Extended States for Polyharmonic Operators with Quasi-periodic Potentials in Dimension Two	This is an announcement only. Text with the detailed proof is under preparation. 11 pages, 4 figures. arXiv admin note: text overlap with arXiv:math-ph/0601008, arXiv:0711.4404, arXiv:1008.4632	null	10.1063/1.4754832	null	math.SP	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	We consider a polyharmonic operator $H=(-\Delta)^l+V(\x)$ in dimension two with $l\geq 2$, $l$ being an integer, and a quasi-periodic potential $V(\x)$. We prove that the spectrum of $H$ contains a semiaxis and there is a family of generalized eigenfunctions at every point of this semiaxis with the following properties. First, the eigenfunctions are close to plane waves $e^{i< \k,\x>}$ at the high energy region. Second, the isoenergetic curves in the space of momenta $\k$ corresponding to these eigenfunctions have a form of slightly distorted circles with holes (Cantor type structure). A new method of multiscale analysis in the momentum space is developed to prove these results.	[ { "version": "v1", "created": "Sun, 6 May 2012 05:14:09 GMT" } ]	2015-06-05T00:00:00	[ [ "Karpeshina", "Yulia", "" ], [ "Shterenberg", "Roman", "" ] ]
1206.2838	Jean-Michel Alimi	Jean-Michel Alimi (1), Vincent Bouillot (1), Yann Rasera (1), Vincent Reverdy (1), Pier-Stefano Corasaniti (1), Irene Balmes (1), St\'ephane Requena (2), Xavier Delaruelle (3), Jean-Noel Richet (3) ((1) LUTh, www.deus-consortium.org, (2) GENCI, (3) TGCC)	DEUS Full Observable {\Lambda}CDM Universe Simulation: the numerical challenge	12 pages, 15 figures, paper submitted to the Supercomputing 2012 Conference (Salt Lake City, November 10-16, 2012)	null	null	null	astro-ph.CO physics.comp-ph	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	We have performed the first-ever numerical N- body simulation of the full observable universe (DEUS "Dark Energy Universe Simulation" FUR "Full Universe Run"). This has evolved 550 billion particles on an Adaptive Mesh Refinement grid with more than two trillion computing points along the entire evolutionary history of the universe and across 6 order of magnitudes length scales, from the size of the Milky Way to that of the whole observable universe. To date, this is the largest and most advanced cosmological simulation ever run. It provides unique information on the formation and evolution of the largest structure in the universe and an exceptional support to future observational programs dedicated to mapping the distribution of matter and galaxies in the universe. The simulation has run on 4752 (of 5040) thin nodes of BULL supercomputer CURIE, using more than 300 TB of memory for 10 million hours of computing time. About 50 PBytes of data were generated throughout the run. Using an advanced and innovative reduction workflow the amount of useful stored data has been reduced to 500 TBytes.	[ { "version": "v1", "created": "Wed, 13 Jun 2012 15:21:29 GMT" } ]	2012-06-14T00:00:00	[ [ "Alimi", "Jean-Michel", "" ], [ "Bouillot", "Vincent", "" ], [ "Rasera", "Yann", "" ], [ "Reverdy", "Vincent", "" ], [ "Corasaniti", "Pier-Stefano", "" ], [ "Balmes", "Irene", "" ], [ "Requena", "Stéphane", "" ], [ "Delaruelle", "Xavier", "" ], [ "Richet", "Jean-Noel", "" ] ]
2311.01691	Aashraya Jha	Aashraya Jha	Finding Integral Points of Elliptic Curves over Imaginary Quadratic Fields	Updated version, to be published in Research in Number Theory as part of ANTS XVI proceedings	null	null	null	math.NT	http://creativecommons.org/licenses/by-nc-nd/4.0/	We determine the quadratic Chabauty set for integral points on elliptic curves of rank $2$ defined over imaginary quadratic fields using quadratic Chabauty. This builds on the work of Bianchi and Balakrishnan et al. We give the first instance of the implementation of anticyclotomic heights for curves which are not base changes, along with an implementation of a certain sieve for elliptic curves introduced by Balakrishnan et al. and used by Bianchi to determine integral points of rank $2$. We give the first example of the determination of the integral points of an elliptic curve of rank $2$ defined over an imaginary quadratic field, which is not a base change via quadratic Chabauty.	[ { "version": "v1", "created": "Fri, 3 Nov 2023 03:35:38 GMT" }, { "version": "v2", "created": "Wed, 4 Sep 2024 18:59:43 GMT" } ]	2024-09-06T00:00:00	[ [ "Jha", "Aashraya", "" ] ]
2505.12692	Ziwei Xu	Ziwei Xu, Udit Sanghi, Mohan Kankanhalli	Bullying the Machine: How Personas Increase LLM Vulnerability	null	null	null	null	cs.AI cs.CL	http://creativecommons.org/licenses/by-nc-sa/4.0/	Large Language Models (LLMs) are increasingly deployed in interactions where they are prompted to adopt personas. This paper investigates whether such persona conditioning affects model safety under bullying, an adversarial manipulation that applies psychological pressures in order to force the victim to comply to the attacker. We introduce a simulation framework in which an attacker LLM engages a victim LLM using psychologically grounded bullying tactics, while the victim adopts personas aligned with the Big Five personality traits. Experiments using multiple open-source LLMs and a wide range of adversarial goals reveal that certain persona configurations -- such as weakened agreeableness or conscientiousness -- significantly increase victim's susceptibility to unsafe outputs. Bullying tactics involving emotional or sarcastic manipulation, such as gaslighting and ridicule, are particularly effective. These findings suggest that persona-driven interaction introduces a novel vector for safety risks in LLMs and highlight the need for persona-aware safety evaluation and alignment strategies.	[ { "version": "v1", "created": "Mon, 19 May 2025 04:32:02 GMT" } ]	2025-05-20T00:00:00	[ [ "Xu", "Ziwei", "" ], [ "Sanghi", "Udit", "" ], [ "Kankanhalli", "Mohan", "" ] ]
2311.12069	Lorenzo Pieri Dr.	Lorenzo Pieri	Hyperwave: Hyper-Fast Communication within General Relativity	null	null	null	null	gr-qc hep-th	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	Warp-drives are solutions of general relativity widely considered unphysical due to high negative energy requirements. While the majority of the literature has focused on macroscopic solutions towards the goal of interstellar travel, in this work we explore what happens in the small radius limit. In this regime the magnitude of the total negative energy requirements gets smaller than the energy contained in a lightning bolt, more than 70 orders of magnitude less than the original Alcubierre warp drive. Such an amount could conceivably be generated with current technology by scaling up Casimir-like apparatuses. We then describe a tubular distribution of externally-generated negative energy which addresses the major issues plaguing macroscopic warp-drives and propose a concrete mechanism to accelerate and decelerate a warp. A byproduct of warp deceleration is the emission of a ray of high-energy particles. The detection of such particles could be used as the backbone of a faster-than-light communication device, reminiscent of the hyperwave of science fiction, even though significant engineering challenges remain to achieve practical communication.	[ { "version": "v1", "created": "Sun, 19 Nov 2023 18:30:35 GMT" }, { "version": "v2", "created": "Thu, 16 May 2024 19:53:50 GMT" } ]	2024-05-20T00:00:00	[ [ "Pieri", "Lorenzo", "" ] ]
2501.07961	Manuel \'Ubeda-Flores	Fabrizio Durante, Juan Fern\'andez-S\'anchez, Manuel \'Ubeda-Flores	Extreme semilinear copulas	null	Fuzzy Sets and Systems, Volume 428 (2022), 121-137	10.1016/j.fss.2020.12.009	null	math.PR	http://creativecommons.org/licenses/by-nc-nd/4.0/	We study the extreme points (in the Krein-Milman sense) of the class of semilinear copulas and provide their characterization. Related results into the more general setting of conjunctive aggregation functions (i.e, semi--copulas and quasi--copulas) are also presented.	[ { "version": "v1", "created": "Tue, 14 Jan 2025 09:25:56 GMT" } ]	2025-01-15T00:00:00	[ [ "Durante", "Fabrizio", "" ], [ "Fernández-Sánchez", "Juan", "" ], [ "Úbeda-Flores", "Manuel", "" ] ]
1211.2125	Guido Gentile	Livia Corsi, Roberto Feola, Guido Gentile	Convergent series for quasi-periodically forced strongly dissipative systems	18 pages	Communications in Contemporary Mathematics 16 (2014), no. 3, 1350022, 20 pp	null	null	math.DS math.CA	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	We study the ordinary differential equation ${\varepsilon}\ddot x+\dot x + {\varepsilon} g(x) = {\varepsilon} f(\omega t)$, with $f$ and $g$ analytic and $f$ quasi-periodic in $t$ with frequency vector $\omega\in R^{d}$. We show that if there exists $c_0\in R$ such that $g(c_0)$ equals the average of $f$ and the first non-zero derivative of $g$ at $c_0$ is of odd order $n$, then, for ${\varepsilon}$ small enough and under very mild Diophantine conditions on $\omega$, there exists a quasi-periodic solution close to $c_0$, with the same frequency vector as $f$. In particular if $f$ is a trigonometric polynomial the Diophantine condition on $\omega$ can be completely removed. This extends results previously available in the literature for $n=1$. We also point out that, if $n=1$ and the first derivative of $g$ at $c_0$ is positive, then the quasi-periodic solution is locally unique and attractive.	[ { "version": "v1", "created": "Fri, 9 Nov 2012 13:34:05 GMT" } ]	2014-07-03T00:00:00	[ [ "Corsi", "Livia", "" ], [ "Feola", "Roberto", "" ], [ "Gentile", "Guido", "" ] ]
2011.07065	Homayoon Beigi	Amith Ananthram, Kailash Karthik Saravanakumar, Jessica Huynh, and Homayoon Beigi	Multi-Modal Emotion Detection with Transfer Learning	11 pages, 7 tables, 2 figures	null	null	RTI-20201113-01	eess.AS cs.CL cs.HC cs.LG	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	Automated emotion detection in speech is a challenging task due to the complex interdependence between words and the manner in which they are spoken. It is made more difficult by the available datasets; their small size and incompatible labeling idiosyncrasies make it hard to build generalizable emotion detection systems. To address these two challenges, we present a multi-modal approach that first transfers learning from related tasks in speech and text to produce robust neural embeddings and then uses these embeddings to train a pLDA classifier that is able to adapt to previously unseen emotions and domains. We begin by training a multilayer TDNN on the task of speaker identification with the VoxCeleb corpora and then fine-tune it on the task of emotion identification with the Crema-D corpus. Using this network, we extract speech embeddings for Crema-D from each of its layers, generate and concatenate text embeddings for the accompanying transcripts using a fine-tuned BERT model and then train an LDA - pLDA classifier on the resulting dense representations. We exhaustively evaluate the predictive power of every component: the TDNN alone, speech embeddings from each of its layers alone, text embeddings alone and every combination thereof. Our best variant, trained on only VoxCeleb and Crema-D and evaluated on IEMOCAP, achieves an EER of 38.05%. Including a portion of IEMOCAP during training produces a 5-fold averaged EER of 25.72% (For comparison, 44.71% of the gold-label annotations include at least one annotator who disagrees).	[ { "version": "v1", "created": "Fri, 13 Nov 2020 18:58:59 GMT" } ]	2020-11-16T00:00:00	[ [ "Ananthram", "Amith", "" ], [ "Saravanakumar", "Kailash Karthik", "" ], [ "Huynh", "Jessica", "" ], [ "Beigi", "Homayoon", "" ] ]
hep-ph/0609128	Cheng-Wei Chiang	Cheng-Wei Chiang and Yu-Feng Zhou	Flavor SU(3) analysis of charmless B meson decays to two pseudoscalar mesons	22 pages and 2 figures; some comments and references added; more references added, version to appear in journal	JHEP 0612:027,2006	10.1088/1126-6708/2006/12/027	KEK TH-1103	hep-ph hep-ex	null	Global fits to charmless B --> PP decays in the framework of flavor SU(3) symmetry are updated and improved without reference to the \sin2\beta measured from the charmonium decay modes. Fit results directly constrain the (\bar\rho,\bar\eta) vertex of the unitarity triangle, and are used to predict the branching ratios and CP asymmetries of all decay modes, including those of the B_s system. Different schemes of SU(3) breaking in decay amplitude sizes are analyzed. The major breaking effect between strangeness-conserving and strangeness-changing decays can be accounted for by including a ratio of decay constants in tree and color-suppressed amplitudes. The possibility of having a new physics contribution to K \pi decays is also examined from the data fitting point of view.	[ { "version": "v1", "created": "Wed, 13 Sep 2006 14:31:13 GMT" }, { "version": "v2", "created": "Mon, 2 Oct 2006 07:24:37 GMT" }, { "version": "v3", "created": "Thu, 16 Nov 2006 08:55:59 GMT" } ]	2011-03-23T00:00:00	[ [ "Chiang", "Cheng-Wei", "" ], [ "Zhou", "Yu-Feng", "" ] ]
2306.17002	Feng Li	Feng Li, Jiayi Zhao, Huan Yang, Dongxiao Yu, Yuanfeng Zhou, Yiran Shen	VibHead: An Authentication Scheme for Smart Headsets through Vibration	null	null	null	null	cs.CR	http://creativecommons.org/licenses/by-nc-nd/4.0/	Recent years have witnessed the fast penetration of Virtual Reality (VR) and Augmented Reality (AR) systems into our daily life, the security and privacy issues of the VR/AR applications have been attracting considerable attention. Most VR/AR systems adopt head-mounted devices (i.e., smart headsets) to interact with users and the devices usually store the users' private data. Hence, authentication schemes are desired for the head-mounted devices. Traditional knowledge-based authentication schemes for general personal devices have been proved vulnerable to shoulder-surfing attacks, especially considering the headsets may block the sight of the users. Although the robustness of the knowledge-based authentication can be improved by designing complicated secret codes in virtual space, this approach induces a compromise of usability. Another choice is to leverage the users' biometrics; however, it either relies on highly advanced equipments which may not always be available in commercial headsets or introduce heavy cognitive load to users. In this paper, we propose a vibration-based authentication scheme, VibHead, for smart headsets. Since the propagation of vibration signals through human heads presents unique patterns for different individuals, VibHead employs a CNN-based model to classify registered legitimate users based the features extracted from the vibration signals. We also design a two-step authentication scheme where the above user classifiers are utilized to distinguish the legitimate user from illegitimate ones. We implement VibHead on a Microsoft HoloLens equipped with a linear motor and an IMU sensor which are commonly used in off-the-shelf personal smart devices. According to the results of our extensive experiments, with short vibration signals ($\leq 1s$), VibHead has an outstanding authentication accuracy; both FAR and FRR are around 5%.	[ { "version": "v1", "created": "Thu, 29 Jun 2023 15:00:32 GMT" } ]	2023-06-30T00:00:00	[ [ "Li", "Feng", "" ], [ "Zhao", "Jiayi", "" ], [ "Yang", "Huan", "" ], [ "Yu", "Dongxiao", "" ], [ "Zhou", "Yuanfeng", "" ], [ "Shen", "Yiran", "" ] ]
2510.06060	Christian Marinoni	Christian Marinoni and Riccardo Fosco Gramaccioni and Eleonora Grassucci and Danilo Comminiello	Controllable Audio-Visual Viewpoint Generation from 360{\deg} Spatial Information	null	null	null	null	cs.MM cs.AI cs.CV	http://creativecommons.org/licenses/by/4.0/	The generation of sounding videos has seen significant advancements with the advent of diffusion models. However, existing methods often lack the fine-grained control needed to generate viewpoint-specific content from larger, immersive 360-degree environments. This limitation restricts the creation of audio-visual experiences that are aware of off-camera events. To the best of our knowledge, this is the first work to introduce a framework for controllable audio-visual generation, addressing this unexplored gap. Specifically, we propose a diffusion model by introducing a set of powerful conditioning signals derived from the full 360-degree space: a panoramic saliency map to identify regions of interest, a bounding-box-aware signed distance map to define the target viewpoint, and a descriptive caption of the entire scene. By integrating these controls, our model generates spatially-aware viewpoint videos and audios that are coherently influenced by the broader, unseen environmental context, introducing a strong controllability that is essential for realistic and immersive audio-visual generation. We show audiovisual examples proving the effectiveness of our framework.	[ { "version": "v1", "created": "Tue, 07 Oct 2025 15:53:31 GMT" } ]	2025-10-08T00:00:00	[ [ "Marinoni", "Christian", "" ], [ "Gramaccioni", "Riccardo Fosco", "" ], [ "Grassucci", "Eleonora", "" ], [ "Comminiello", "Danilo", "" ] ]
1710.05937	Sergio Lerma-Hernandez	Sergio Lerma-Hern\'andez, Jorge Ch\'avez-Carlos, Miguel A. Bastarrachea-Magnani, Lea F. Santos, Jorge G. Hirsch	Analytical description of the survival probability of coherent states in regular regimes	23 pages, 9 figures	J. Phys. A: Math. Theor. 51, 475302 (2018)	10.1088/1751-8121/aae2c3	null	quant-ph cond-mat.other	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	Using coherent states as initial states, we investigate the quantum dynamics of the Lipkin-Meshkov-Glick (LMG) and Dicke models in the semi-classical limit. They are representative models of bounded systems with one- and two-degrees of freedom, respectively. The first model is integrable, while the second one has both regular and chaotic regimes. Our analysis is based on the survival probability. Within the regular regime, the energy distribution of the initial coherent states consists of quasi-harmonic sub-sequences of energies with Gaussian weights. This allows for the derivation of analytical expressions that accurately describe the entire evolution of the survival probability, from $t=0$ to the saturation of the dynamics. The evolution shows decaying oscillations with a rate that depends on the anharmonicity of the spectrum and, in the case of the Dicke model, on interference terms coming from the simultaneous excitation of its two-degrees of freedom. As we move away from the regular regime, the complexity of the survival probability is shown to be closely connected with the properties of the corresponding classical phase space. Our approach has broad applicability, since its central assumptions are not particular of the studied models.	[ { "version": "v1", "created": "Mon, 16 Oct 2017 18:00:46 GMT" }, { "version": "v2", "created": "Wed, 30 Jan 2019 17:46:56 GMT" } ]	2019-01-31T00:00:00	[ [ "Lerma-Hernández", "Sergio", "" ], [ "Chávez-Carlos", "Jorge", "" ], [ "Bastarrachea-Magnani", "Miguel A.", "" ], [ "Santos", "Lea F.", "" ], [ "Hirsch", "Jorge G.", "" ] ]
1810.02168	Guillaume Jeanmairet	Guillaume Jeanmairet, Benjamin Rotenberg, Maximilien Levesque, Daniel Borgis and Mathieu Salanne	A Molecular Density Functional Theory Approach to Electron Transfer Reactions	30 pages, 10 figures, Chemical Science, 2019	null	10.1039/C8SC04512G	null	physics.chem-ph	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	Beyond the dielectric continuum description initiated by Marcus theory, the nowadays standard theoretical approach to study electron transfer (ET) reactions in solution or at interfaces is to use classical force field or ab initio Molecular Dynamics simulations. We propose here an alternative method based on liquid-state theory, namely molecular density functional theory, which is numerically much more efficient than simulations while still retaining the molecular nature of the solvent. We begin by reformulating molecular ET theory in a density functional language and show how to compute the various observables characterizing ET reactions from an ensemble of density functional minimizations. In particular, we define in that formulation the relevant order parameter of the reaction, the so-called vertical energy gap, and determine the Marcus free energy curves of both reactant and product states along that coordinate. Important thermodynamic quantities such as the reaction free energy and the reorganization free energies follow. We assess the validity of the method by studying the model Cl$^0\rightarrow$ Cl$^+$ and Cl$^0\rightarrow$ Cl$^-$ ET reactions in bulk water for which molecular dynamics results are available. The anionic case is found to violate the standard Marcus theory. Finally, we take advantage of the computational efficiency of the method to study the influence of confinement on the ET, by investigating the evolution of the reorganization free energy of the Cl$^0\rightarrow$ Cl$^+$ reaction when the atom approaches an atomistically resolved wall.	[ { "version": "v1", "created": "Thu, 4 Oct 2018 12:18:53 GMT" }, { "version": "v2", "created": "Wed, 12 Dec 2018 08:51:19 GMT" } ]	2018-12-13T00:00:00	[ [ "Jeanmairet", "Guillaume", "" ], [ "Rotenberg", "Benjamin", "" ], [ "Levesque", "Maximilien", "" ], [ "Borgis", "Daniel", "" ], [ "Salanne", "Mathieu", "" ] ]
1203.0824	Fatemeh Taghavi Shahri	Z. Alizadeh Yazdi, A. Tahamtan, F. Taghavi-Shahri, F. Arash and M.E. Zomorrodian	Transverse Spin Structure Function g2(x, Q2 ) in the Valon model	21 pages, 19 figures	Phys. Rev. C 92, 015213 (2015)	10.1103/PhysRevC.92.015213	null	hep-ph	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	The spin dependent structure function, g2ww(x,Q^2), is calculated in the valon model. A simple approach is given for the determination of the twist-3 part of the g2(x, Q^2) in Mellin space; thus, enabling us to obtain the full transverse structure function, g2(x, Q^2) for proton, neutron and the deuteron. In light of the new data, we have further calculated the transversely polarized structure function of g23He(x, Q^2). Our results are checked against the experimental data and nice agreements are observed.	[ { "version": "v1", "created": "Mon, 5 Mar 2012 07:35:27 GMT" }, { "version": "v2", "created": "Wed, 12 Aug 2015 09:27:29 GMT" } ]	2015-08-13T00:00:00	[ [ "Yazdi", "Z. Alizadeh", "" ], [ "Tahamtan", "A.", "" ], [ "Taghavi-Shahri", "F.", "" ], [ "Arash", "F.", "" ], [ "Zomorrodian", "M. E.", "" ] ]
1508.04034	Hong-Hao Zhang	Chengfeng Cai, Ze-Min Huang, Zhaofeng Kang, Zhao-Huan Yu, Hong-Hao Zhang	Confronting the real scalar septuplet minimal dark matter model with vacuum stability, perturbativity, and Type-I and Type-III seesaws	This paper has been withdrawn by the authors due to a missing term in the potential in equation (10) and the resulting errors. Please see the new submission by the same authors today	null	null	null	hep-ph	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	We study a real scalar septuplet model which has a neutral component regarded as a dark matter particle candidate. The calculation of its thermal relic abundance without (with) the Sommerfeld effect suggests that the observed value corresponds to the mass of the dark matter particle $m_0 \gtrsim 8.8~(25)~\mathrm{TeV}$. Two extra quartic couplings $\lambda_2$ and $\lambda_3$ introduced in this model affect the running of other couplings, and hence the vacuum stability and the perturbativity up to the Planck scale. Therefore, the vacuum stability and the perturbativity conditions can constrain these couplings into a narrow region in the $\lambda_2$-$\lambda_3$ plane. Other constraints from $h\to\gamma\gamma$, electroweak oblique parameters, and direct and indirect DM searches are also investigated. Moreover, we survey the vacuum stability and the perturbativity in the model combining the septuplet with the Type-I or Type-III seesaw. The running of couplings is further altered when the energy scale goes above the seesaw scale. In the Type-I case, when the seesaw scale $\sim 10^{15}~\mathrm{GeV}$, the vacuum stability condition makes the acceptable region in the $\lambda_2$-$\lambda_3$ plane much narrower. In the Type-III case, if the seesaw scale is $\lesssim 52~\mathrm{TeV}$ or $\gtrsim 10^{15}~\mathrm{GeV}$, the acceptable region vanishes.	[ { "version": "v1", "created": "Mon, 17 Aug 2015 14:05:09 GMT" }, { "version": "v2", "created": "Wed, 19 Aug 2015 16:58:37 GMT" }, { "version": "v3", "created": "Tue, 6 Oct 2015 13:07:22 GMT" } ]	2015-10-07T00:00:00	[ [ "Cai", "Chengfeng", "" ], [ "Huang", "Ze-Min", "" ], [ "Kang", "Zhaofeng", "" ], [ "Yu", "Zhao-Huan", "" ], [ "Zhang", "Hong-Hao", "" ] ]
2303.16657	Dhaval Taunk	Dhaval Taunk and Vasudeva Varma	Summarizing Indian Languages using Multilingual Transformers based Models	null	Forum for Information Retrieval Evaluation, December 9-13, 2022, India	null	null	cs.CL	http://creativecommons.org/licenses/by-nc-sa/4.0/	With the advent of multilingual models like mBART, mT5, IndicBART etc., summarization in low resource Indian languages is getting a lot of attention now a days. But still the number of datasets is low in number. In this work, we (Team HakunaMatata) study how these multilingual models perform on the datasets which have Indian languages as source and target text while performing summarization. We experimented with IndicBART and mT5 models to perform the experiments and report the ROUGE-1, ROUGE-2, ROUGE-3 and ROUGE-4 scores as a performance metric.	[ { "version": "v1", "created": "Wed, 29 Mar 2023 13:05:17 GMT" } ]	2023-03-30T00:00:00	[ [ "Taunk", "Dhaval", "" ], [ "Varma", "Vasudeva", "" ] ]
2104.04294	Simon Wall	Ernest Pastor, David Moreno-Menc\'ia, Maurizio Monti, Allan S. Johnson, Nina Fleischmann, Cuixiang Wang, Youguo Shi, Xuerong Liu, Daniel G. Mazzone, Mark P.M. Dean, Simon Wall	Non-thermal breaking of magnetic order via photo-generated spin defects	null	Physical Review B 105, 064409 (2022)	10.1103/PhysRevB.105.064409	null	cond-mat.str-el	http://creativecommons.org/licenses/by/4.0/	In Mott insulators the evolution of antiferromagnetic order to superconducting or charge-density-wave-like states upon chemical doping underpins the control of quantum phases. Photo-doping can induce similar transitions on the ultrafast timescale, however the response of the spin system has remained elusive. Here, we use 4D-ultrafast optical spectroscopy to extract quantitative magnetic dynamics in the spin-orbit coupled Mott insulator Sr3Ir2O7. We demonstrate that light can non-thermally melt long-range spin order. At low fluences magnetic order recovers within 1 ps despite demagnetization of roughly 50%. However, high fluences induce a crossover to a long-lived demagnetized state without increasing the lattice temperature. We show that the generation of photo-induced spin defects enables a mechanism that stabilizes the demagnetized state which could help expose new transient phases.	[ { "version": "v1", "created": "Fri, 9 Apr 2021 10:42:08 GMT" }, { "version": "v2", "created": "Fri, 7 Jan 2022 14:31:24 GMT" } ]	2022-02-09T00:00:00	[ [ "Pastor", "Ernest", "" ], [ "Moreno-Mencía", "David", "" ], [ "Monti", "Maurizio", "" ], [ "Johnson", "Allan S.", "" ], [ "Fleischmann", "Nina", "" ], [ "Wang", "Cuixiang", "" ], [ "Shi", "Youguo", "" ], [ "Liu", "Xuerong", "" ], [ "Mazzone", "Daniel G.", "" ], [ "Dean", "Mark P. M.", "" ], [ "Wall", "Simon", "" ] ]
math/0008054	Fabio Pioli	L. Brambila Paz, E. Gomez Gonzalez, F. Pioli	On Picard bundles over Prym varieties	15 pages, Latex2e + amsart, xypic needed	null	null	null	math.AG	null	We study the birationality (onto its image) of the Abel-Prym morphism associated with a Prym-Tuyrin variety. We use such result to prove that Picard bundles over Prym varieties are simple and moreover they are stable when the Abel-Prym morphism is not birational. As a consequence we obtain that Picard bundles over moduli spaces of stable vector bundles with fixed determinant are simple. We prove that Picard bundles over moduli spaces of rank 2 vector bundles on curves of genus 2 bundles are stable.	[ { "version": "v1", "created": "Mon, 7 Aug 2000 11:44:33 GMT" } ]	2007-05-23T00:00:00	[ [ "Paz", "L. Brambila", "" ], [ "Gonzalez", "E. Gomez", "" ], [ "Pioli", "F.", "" ] ]
2310.17818	Sumit Mazumdar	R. Chesler, P. Bhattacharyya, A. Shukla and S. Mazumdar	Distinct contiguous versus separated triplet-pair multiexcitons in an intramolecular singlet fission chromophore	null	null	null	null	cond-mat.str-el	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	We show from many-body quantum mechanical calculations that there occur structurally distinct triplet-pair eigenstates in the intramolecular singlet fission (iSF) compound pentacene-tetracene-pentacene. Triplet excitons occupy neigboring pentacene and tetracene monomers in the higher energy doubly degenerate triplet-triplet multiexcitons, and terminal pentacene chromophores in the lower energy multiexciton. The lowest energy multiexciton is reached by ultrafast triplet migration within the triplet-triplet manifold, a result with profound implication for the design of superior iSF compounds.	[ { "version": "v1", "created": "Thu, 26 Oct 2023 23:44:11 GMT" } ]	2023-10-30T00:00:00	[ [ "Chesler", "R.", "" ], [ "Bhattacharyya", "P.", "" ], [ "Shukla", "A.", "" ], [ "Mazumdar", "S.", "" ] ]
math/0607308	Wouter Castryck	Wouter Castryck, Jan Denef, Frederik Vercauteren	Computing Zeta Functions of Nondegenerate Curves	41 pages	null	null	null	math.NT math.AG	null	In this paper we present a p-adic algorithm to compute the zeta function of a nondegenerate curve over a finite field using Monsky-Washnitzer cohomology. The paper vastly generalizes previous work since all known cases, e.g. hyperelliptic, superelliptic and C_{ab} curves, can be transformed to fit the nondegenerate case. For curves with a fixed Newton polytope, the property of being nondegenerate is generic, so that the algorithm works for almost all curves with given Newton polytope. For a genus g curve over F_{p^n}, the expected running time is O(n^3g^6 + n^2g^{6.5}), whereas the space complexity amounts to O(n^3g^4), assuming p is fixed.	[ { "version": "v1", "created": "Thu, 13 Jul 2006 13:18:56 GMT" }, { "version": "v2", "created": "Wed, 19 Jul 2006 12:52:49 GMT" }, { "version": "v3", "created": "Mon, 8 Jan 2007 16:13:57 GMT" } ]	2007-05-23T00:00:00	[ [ "Castryck", "Wouter", "" ], [ "Denef", "Jan", "" ], [ "Vercauteren", "Frederik", "" ] ]
1111.4833	Igor Goychuk	Igor Goychuk, Vasyl Kharchenko	Fractional Brownian motors and Stochastic Resonance	null	Phys. Rev. E 85, 051131 (2012)	10.1103/PhysRevE.85.051131	null	cond-mat.stat-mech	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	We study fluctuating tilt Brownian ratchets based on fractional subdiffusion in sticky viscoelastic media characterized by a power law memory kernel. Unlike the normal diffusion case the rectification effect vanishes in the adiabatically slow modulation limit and optimizes in a driving frequency range. It is shown also that anomalous rectification effect is maximal (stochastic resonance effect) at optimal temperature and can exhibit a surprisingly good quality. Moreover, subdiffusive current can flow in the counter-intuitive direction upon a change of temperature or driving frequency. The dependence of anomalous transport on load exhibits a remarkably simple universality.	[ { "version": "v1", "created": "Mon, 21 Nov 2011 11:22:27 GMT" } ]	2012-06-04T00:00:00	[ [ "Goychuk", "Igor", "" ], [ "Kharchenko", "Vasyl", "" ] ]
1807.09544	Ming-Hui Lu	Xiujuan Zhang, Meng Xiao, Ying Cheng, Ming-Hui Lu and Johan Christensen	Topological Sound	33 pages, 8 figures	Communications Physicsvolume 1, 97 (2018)	10.1038/s42005-018-0094-4	null	cond-mat.mes-hall	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	Recently, we witnessed a tremendous effort to conquer the realm of acoustics as a possible playground to test with sound waves topologically protected wave propagation. Acoustics differ substantially from photonic and electronic systems since longitudinal sound waves lack intrinsic spin polarization and breaking the time-reversal symmetry requires additional complexities that both are essential in mimicking the quantum effects leading to topologically robust sound propagation. In this article, we review the latest efforts to explore with sound waves topological states of quantum matter in two- and three-dimensional systems where we discuss how spin and valley degrees of freedom appear as highly novel ingredients to tailor the flow of sound in the form of one-way edge modes and defect-immune protected acoustic waves. Both from a theoretical stand point and based on contemporary experimental verifications, we summarize the latest advancements of the flourishing research frontier on topological sound.	[ { "version": "v1", "created": "Wed, 25 Jul 2018 12:14:37 GMT" } ]	2019-05-14T00:00:00	[ [ "Zhang", "Xiujuan", "" ], [ "Xiao", "Meng", "" ], [ "Cheng", "Ying", "" ], [ "Lu", "Ming-Hui", "" ], [ "Christensen", "Johan", "" ] ]
1409.7237	Xiaolong Su	Lingyu Ma and Xiaolong Su	Remote transfer of Gaussian quantum discord	null	Opt. Express 22, 15894 (2014)	10.1364/OE.22.015894	null	quant-ph	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	Quantum discord quantifies quantum correlation between quantum systems, which has potential application in quantum information processing. In this paper, we propose a scheme realizing the remote transfer of Gaussian quantum discord, in which another quantum discordant state or an Einstein-Podolsky-Rosen entangled state serves as ancillary state. The calculation shows that two independent optical modes that without direct interaction become quantum correlated after the transfer. The output Gaussian quantum discord can be higher than the initial Gaussian quantum discord when optimal gain of the classical channel and the ancillary state are chosen. The physical reason for this result comes from the fact that the quantum discord of an asymmetric Gaussian quantum discordant state can be higher than that of a symmetric one. The presented scheme has potential application in quantum information network.	[ { "version": "v1", "created": "Thu, 25 Sep 2014 12:46:26 GMT" } ]	2023-07-19T00:00:00	[ [ "Ma", "Lingyu", "" ], [ "Su", "Xiaolong", "" ] ]
2312.10822	Andr\'e Rodrigues	Andre Rodrigues, Alberto Rodrigues da Silva	Validation of Rigorous Requirements Specifications and Document Automation with the ITLingo RSL Language	10 pages, 13 figures, 2 tables, 1 spec	null	null	null	cs.SE	http://creativecommons.org/licenses/by/4.0/	Despite being an essential step in software development, writing requirements specifications is frequently performed in natural language, leading to issues like inconsistency, incompleteness, or ambiguity. The ITLingo initiative has introduced a requirements specification language named RSL to enhance the rigor and consistency of technical documentation. On the other hand, natural language processing (NLP) is a field that has been supporting the automatic analysis of requirements by helping to detect issues that may be difficult to see during a manual review. Once the requirements specifications are validated, it is important to automate the generation of documents for these specifications to reduce manual work, reduce errors, and to produce documentation in multiple formats that are more easily reusable or recognized by the different stakeholders. This paper reviews existing research and tools in the fields of requirements validation and document automation. We propose to extend RSL with validation of specifications based on customized checks, and on linguistic rules dynamically defined in the RSL itself. In addition, we also propose the automatic generation of documents from these specifications to JSON, TXT, or other file formats using template files. We use a fictitious business information system to support the explanation and to demonstrate how these validation checks can assist in writing better requirements specifications and then generate documents in multiple formats based on them. Finally, we evaluate the usability of the proposed validation and document automation approach through a user session.	[ { "version": "v1", "created": "Sun, 17 Dec 2023 21:39:26 GMT" } ]	2023-12-19T00:00:00	[ [ "Rodrigues", "Andre", "" ], [ "da Silva", "Alberto Rodrigues", "" ] ]
2308.01025	Young-Man Kim	Young-Man Kim	Error Analysis of CORDIC Processor with FPGA Implementation	5 pages, 7 Figures	null	null	null	eess.SY cs.SY	http://creativecommons.org/licenses/by/4.0/	The coordinate rotation digital computer (CORDIC) is a shift-add based fast computing algorithm which has been found in many digital signal processing (DSP) applications. In this paper, a detailed error analysis based on mean square error criteria and its implementation on FPGA is presented. Two considered error sources are an angle approximation error and a quantization error due to finite word length in fixed-point number system. The error bound and variance are discussed in theory. The CORDIC algorithm is implemented on FPGA using the Xilinx Zynq-7000 development board called ZedBoard. Those results of theoretical error analysis are practically investigated by implementing it on actual FPGA board. In addition, Matlab is used to provide theoretical value as a baseline model by being set up in double-precision floating-point to compare it with the practical value of errors on FPGA implementation.	[ { "version": "v1", "created": "Wed, 2 Aug 2023 09:16:16 GMT" } ]	2023-08-03T00:00:00	[ [ "Kim", "Young-Man", "" ] ]
1801.05257	Maciej Dunajski	Maciej Dunajski, Paul Tod	Conics, Twistors, and anti-self-dual tri-K\"ahler metrics	29 pages, 2 figures. Final version, to appear in the Asian Journal of Mathematics	null	null	null	math.DG hep-th math-ph math.MP	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	We describe the range of the Radon transform on the space $M$ of irreducible conics in $\CP^2$ in terms of natural differential operators associated to the $SO(3)$-structure on $M=SL(3, \R)/SO(3)$ and its complexification. Following \cite{moraru} we show that for any function $F$ in this range, the zero locus of $F$ is a four-manifold admitting an anti-self-dual conformal structure which contains three different scalar-flat K\"ahler metrics. The corresponding twistor space ${\mathcal Z}$ admits a holomorphic fibration over $\CP^2$. In the special case where ${\mathcal Z}=\CP^3\setminus\CP^1$ the twistor lines project down to a four-parameter family of conics which form triangular Poncelet pairs with a fixed base conic.	[ { "version": "v1", "created": "Tue, 16 Jan 2018 13:48:57 GMT" }, { "version": "v2", "created": "Wed, 11 Dec 2019 23:16:52 GMT" } ]	2019-12-13T00:00:00	[ [ "Dunajski", "Maciej", "" ], [ "Tod", "Paul", "" ] ]
1108.5332	Eric Ricard	Sjoerd Dirksen and \'Eric Ricard	Some remarks on noncommutative Khintchine inequalities	null	null	10.1112/blms/bds107	null	math.OA math.FA	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	Normalized free semi-circular random variables satisfy an upper Khintchine inequality in $L_\infty$. We show that this implies the corresponding upper Khintchine inequality in any noncommutative Banach function space. As applications, we obtain a very simple proof of a well-known interpolation result for row and column operator spaces and, moreover, answer an open question on noncommutative moment inequalities concerning a paper by Bekjan and Chen.	[ { "version": "v1", "created": "Fri, 26 Aug 2011 15:45:47 GMT" } ]	2014-02-26T00:00:00	[ [ "Dirksen", "Sjoerd", "" ], [ "Ricard", "Éric", "" ] ]
1704.03545	Shaun Stevens	Corinne Blondel, Guy Henniart and Shaun Stevens	Jordan blocks of cuspidal representations of symplectic groups	64 pages	Alg. Number Th. 12 (2018) 2327-2386	10.2140/ant.2018.12.2327	null	math.RT math.NT	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	Let $G$ be a symplectic group over a nonarchimedean local field of characteristic zero and odd residual characteristic. Given an irreducible cuspidal representation of G, we determine its Langlands parameter (equivalently, its Jordan blocks in the language of Moeglin) in terms of the local data from which the representation is explicitly constructed, up to a possible unramified twist in each block of the parameter. We deduce a Ramification Theorem for $G$, giving a bijection between the set of endo-parameters for $G$ and the set of restrictions to wild inertia of discrete Langlands parameters for $G$, compatible with the local Langlands correspondence. The main tool consists in analysing the intertwining Hecke algebra of a good cover, in the sense of Bushnell--Kutzko, for parabolic induction from a cuspidal representation of $G\times\mathrm{GL}_n$, seen as a maximal Levi subgroup of a bigger symplectic group, in order to determine its (ir)reducibility; a criterion of Moeglin then relates this to Langlands parameters.	[ { "version": "v1", "created": "Tue, 11 Apr 2017 21:36:16 GMT" } ]	2019-02-13T00:00:00	[ [ "Blondel", "Corinne", "" ], [ "Henniart", "Guy", "" ], [ "Stevens", "Shaun", "" ] ]
hep-ph/9909404	Ian Low	Adam K. Leibovich, Ian Low, and I. Z. Rothstein	Extracting V_{ub} Without Recourse to Structure Functions	20 pages, no figures, minor typos corrected	Phys.Rev.D61:053006,2000	10.1103/PhysRevD.61.053006	null	hep-ph hep-ex	null	We present a closed form expression for \|V_{ub}\|^2/ \|V_{tb} V_{ts}^*\|^2 in terms of the endpoint photon and lepton spectra from the inclusive decays B -> X_s\gamma and B -> X_u\ell\nu, respectively, which includes the resummation of the endpoint logs at next to leading order and is completely independent of the B meson structure function. The use of this expression for extracting V_{ub} would eliminate the large systematic errors usually incurred due to the modeling of the heavy quarks' Fermi motion.	[ { "version": "v1", "created": "Thu, 16 Sep 1999 17:45:08 GMT" }, { "version": "v2", "created": "Tue, 21 Dec 1999 19:27:27 GMT" } ]	2014-11-17T00:00:00	[ [ "Leibovich", "Adam K.", "" ], [ "Low", "Ian", "" ], [ "Rothstein", "I. Z.", "" ] ]
1407.8318	Hannah Bergner	Hannah Bergner	Conjugacy classes of $n$-tuples in semi-simple Jordan algebras	12 pages	null	null	null	math.RT math.RA	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	Let $J$ be a finite-dimensional semi-simple Jordan algebra over an algebraically closed field of characteristic $0$. In this article, the diagonal action of the automorphism group of $J$ on the $n$-fold product $J\times\ldots \times J$ is studied. In particular, it is shown that the orbit through an $n$-tuple $x=(x_1,,\ldots,x_n)$ is closed if and only if the Jordan subalgebra generated by the elements $x_1,\ldots, x_n$ is semi-simple.	[ { "version": "v1", "created": "Thu, 31 Jul 2014 08:51:14 GMT" } ]	2014-08-01T00:00:00	[ [ "Bergner", "Hannah", "" ] ]
1504.00631	Pablo Shmerkin	Pablo Shmerkin and Boris Solomyak	Absolute continuity of complex Bernoulli convolutions	22 pages, no figures	Math. Proc. Cambridge Philos. Soc. 161 (2016), no. 3, 435--453	10.1017/S0305004116000335	null	math.DS math.CA	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	We prove that complex Bernoulli convolutions are absolutely continuous in the supercritical parameter region, outside of an exceptional set of parameters of zero Hausdorff dimension. Similar results are also obtained in the biased case, and for other parametrized families of self-similar sets and measures in the complex plane, extending earlier results.	[ { "version": "v1", "created": "Thu, 2 Apr 2015 18:16:07 GMT" } ]	2017-08-23T00:00:00	[ [ "Shmerkin", "Pablo", "" ], [ "Solomyak", "Boris", "" ] ]
2302.03365	Jaroslaw Juraszek	J. Juraszek, M. Konczykowski, D. Kaczorowski, and T. Cichorek	Temperature dependence of the lower critical field of the noncentrosymmetric superconductor $\alpha$-BiPd	14 pages, 5 figures	null	10.1002/pssr.202200423	null	cond-mat.supr-con	http://creativecommons.org/licenses/by/4.0/	Temperature variation of the lower critical field in the noncentrosymmetric superconductor $\alpha$-BiPd was probed by local magnetization measurements using Hall micromagnetometry, performed down to 0.3 K in a magnetic field applied along the crystallographic $b$ axis. Below a critical temperature $T_c \simeq$ 3.8 K, a conventional $H_{c1}(T)$ dependence was found, typical for a single-band $s$-wave BCS superconductor. The obtained data imply an absence of spin-triplet component in the superconducting wavefunction and marginal multiband effects in this material, which contradicts some literature reports.	[ { "version": "v1", "created": "Tue, 7 Feb 2023 10:17:16 GMT" }, { "version": "v2", "created": "Mon, 1 May 2023 16:12:05 GMT" } ]	2023-05-02T00:00:00	[ [ "Juraszek", "J.", "" ], [ "Konczykowski", "M.", "" ], [ "Kaczorowski", "D.", "" ], [ "Cichorek", "T.", "" ] ]
astro-ph/0411549	James E. Taylor	James E. Taylor (University of Oxford)	Substructure and Tidal Debris in Local Galaxies: Models and Observations	4 pages, 4 figures; to appear in the proceedings of "The Three-Dimensional Universe with Gaia", eds. M. Perryman & C. Turon (ESA SP-576); pdf version of the full poster can be found at http://www-astro.physics.ox.ac.uk/~jet/posters/GAIA_print.pdf	null	null	null	astro-ph	null	One of the generic predictions of modern cosmological models is that large galaxies should have experienced many mergers with smaller galaxies at some point in their past. Debris from such encounters will leave spatially distinct substructure in the stellar haloes of nearby galaxies, detectable for a few orbital periods after the final merger. In the case of the Milky Way, kinematic data from surveys such as RAVE and satellite missions such as GAIA will allow us to probe much more of the merger history, and to connect the properties of the stellar halo with those of local dwarf galaxies. To estimate what these programmes may discover, we review current observations of minor mergers in nearby galaxies, and compare these with predictions from a semi-analytic model of galaxy formation.	[ { "version": "v1", "created": "Thu, 18 Nov 2004 19:18:53 GMT" } ]	2007-05-23T00:00:00	[ [ "Taylor", "James E.", "", "University of Oxford" ] ]
2105.00238	Sobirjon Shoyimardonov	U.A.Rozikov, S.K.Shoyimardonov	An application of discrete-time SEIR model to the COVID-19 spread	13 pages, 4 figures	null	null	null	math.DS q-bio.PE	http://creativecommons.org/licenses/by/4.0/	The Susceptible-Exposed-Infectious-Recovered (SEIR) model is applied in several countries to ascertain the spread of the coronavirus disease 2019 (COVID-19). We consider discrete-time SEIR epidemic model in a closed system which does not account for births or deaths, total population size under consideration is constant. This dynamical system generated by a non-linear evolution operator depending on four parameters. Under some conditions on parameters we reduce the evolution operator to a quadratic stochastic operator (QSO) which maps 3-dimensional simplex to itself. We show that the QSO has uncountable set of fixed points (all laying on the boundary of the simplex). It is shown that all trajectories of the dynamical system (generated by the QSO) of the SEIR model are convergent (i.e. the QSO is regular). Moreover, we discuss the efficiency of the model for Uzbekistan.	[ { "version": "v1", "created": "Sat, 1 May 2021 12:47:01 GMT" } ]	2021-05-04T00:00:00	[ [ "Rozikov", "U. A.", "" ], [ "Shoyimardonov", "S. K.", "" ] ]
1107.0884	David A. Kessler	A. Dechant, E. Lutz, E. Barkai, D. A. Kessler	Solution of the Fokker-Planck equation with a logarithmic potential	null	null	10.1007/s10955-011-0363-z	null	cond-mat.stat-mech physics.atom-ph	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	We investigate the diffusion of particles in an attractive one-dimensional potential that grows logarithmically for large $\|x\|$ using the Fokker-Planck equation. An eigenfunction expansion shows that the Boltzmann equilibrium density does not fully describe the long time limit of this problem. Instead this limit is characterized by an infinite covariant density. This non-normalizable density yields the mean square displacement of the particles, which for a certain range of parameters exhibits anomalous diffusion. In a symmetric potential with an asymmetric initial condition, the average position decays anomalously slowly. This problem also has applications outside the thermal context, as in the diffusion of the momenta of atoms in optical molasses.	[ { "version": "v1", "created": "Tue, 5 Jul 2011 14:32:10 GMT" } ]	2015-05-28T00:00:00	[ [ "Dechant", "A.", "" ], [ "Lutz", "E.", "" ], [ "Barkai", "E.", "" ], [ "Kessler", "D. A.", "" ] ]
astro-ph/0512514	Laurent Chemin	Laurent Chemin, Olivier Hernandez, Chantal Balkowski, Claude Carignan, Philippe Amram	Harmonic analysis of the Ha velocity field of NGC 4254	3 pages, 2 figures, to appear in "Science Perspectives for 3D Spectroscopy", ESO Astrophysics Symposia, M. Kissler-Patig, M.M. Roth & J.R. Walsh eds	null	null	null	astro-ph	null	The ionized gas kinematics of the Virgo Cluster galaxy NGC 4254 (Messier 99) is analyzed by an harmonic decomposition of the velocity field into Fourier coefficients. The aims of this study are to measure the kinematical asymmetries of Virgo cluster galaxies and to connect them to the environment. The analysis reveals significant $m=1,2,4$ terms which origins are discussed.	[ { "version": "v1", "created": "Tue, 20 Dec 2005 21:00:53 GMT" } ]	2007-05-23T00:00:00	[ [ "Chemin", "Laurent", "" ], [ "Hernandez", "Olivier", "" ], [ "Balkowski", "Chantal", "" ], [ "Carignan", "Claude", "" ], [ "Amram", "Philippe", "" ] ]
2503.04481	Laura Cardani	The CUPID Collaboration: K. Alfonso, A. Armatol, C. Augier, F. T. Avignone III, O. Azzolini, A. S. Barabash, G. Bari, A. Barresi, D. Baudin, F. Bellini, G. Benato, L. Benussi, V. Berest, M. Beretta, M. Bettelli, M. Biassoni, J. Billard, F. Boffelli, V. Boldrini, E. D. Brandani, C. Brofferio, C. Bucci, M. Buchynska, J. Camilleri, A. Campani, J. Cao, C. Capelli, S. Capelli, V. Caracciolo, L. Cardani, P. Carniti, N. Casali, E. Celi, C. Chang, M. Chapellier, H. Chen, D. Chiesa, D. Cintas, M. Clemenza, I. Colantoni, S. Copello, O. Cremonesi, R. J. Creswick, A. D'Addabbo, I. Dafinei, F. A. Danevich, F. De Dominicis, M. De Jesus, P. de Marcillac, S. Dell'Oro, S. Di Domizio, S. Di Lorenzo, V. Domp\`e, A. Drobizhev, L. Dumoulin, G. Fantini, M. El Idrissi, M. Faverzani, E. Ferri, F. Ferri, F. Ferroni, E. Figueroa-Feliciano, J. Formaggio, A. Franceschi, S. Fu, B. K. Fujikawa, J. Gascon, S. Ghislandi, A. Giachero, M. Girola, L. Gironi, A. Giuliani, P. Gorla, C. Gotti, C. Grant, P. Gras, P. V. Guillaumon, T. D. Gutierrez, K. Han, E. V. Hansen, K. M. Heeger, D. L. Helis, H. Z. Huang, M. T. Hurst, L. Imbert, A. Juillard, G. Karapetrov, G. Keppel, H. Khalife, V. V. Kobychev, Yu. G. Kolomensky, R. Kowalski, H. Lattaud, M. Lefevre, M. Lisovenko, R. Liu, Y. Liu, P. Loaiza, L. Ma, F. Mancarella, N. Manenti, A. Mariani, L. Marini, S. Marnieros, M. Martinez, R. H. Maruyama, Ph. Mas, D. Mayer, G. Mazzitelli, E. Mazzola, Y. Mei, M. N. Moore, S. Morganti, T. Napolitano, M. Nastasi, J. Nikkel, C. Nones, E. B. Norman, V. Novosad, I. Nutini, T. O'Donnell, E. Olivieri, M. Olmi, B. T. Oregui, S. Pagan, M. Pageot, L. Pagnanini, D. Pasciuto, L. Pattavina, M. Pavan, \`O. Penek, H. Peng, G. Pessina, V. Pettinacci, C. Pira, S. Pirro, O. Pochon, D. V. Poda, T. Polakovic, O. G. Polischuk, E. G. Pottebaum, S. Pozzi, E. Previtali, A. Puiu, S. Puranam, S. Quitadamo, A. Rappoldi, G. L. Raselli, A. Ressa, R. Rizzoli, C. Rosenfeld, P. Rosier, M. Rossella, J. A. Scarpaci, B. Schmidt, R. Serino, A. Shaikina, K. Shang, V. Sharma, V. N. Shlegel, V. Singh, M. Sisti, P. Slocum, D. Speller, P. T. Surukuchi, L. Taffarello, S. Tomassini, C. Tomei, A. Torres, J. A. Torres, D. Tozzi, V. I. Tretyak, D. Trotta, M. Velazquez, K. J. Vetter, S. L. Wagaarachchi, G. Wang, L. Wang, R. Wang, B. Welliver, J. Wilson, K. Wilson, L. A. Winslow, F. Xie, M. Xue, J. Yang, V. Yefremenko, V. I. Umatov, M. M. Zarytskyy, T. Zhu, A. Zolotarova and S. Zucchelli	Innovating Bolometers' Mounting: A Gravity-Based Approach	null	null	null	null	physics.ins-det hep-ex nucl-ex	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	Cryogenic calorimeters, also known as bolometers, are among the leading technologies for searching for rare events. The CUPID experiment is exploiting this technology to deploy a tonne-scale detector to search for neutrinoless double-beta decay of $^{100}$Mo. The CUPID collaboration proposed an innovative approach to assembling bolometers in a stacked configuration, held in position solely by gravity. This gravity-based assembly method is unprecedented in the field of bolometers and offers several advantages, including relaxed mechanical tolerances and simplified construction. To assess and optimize its performance, we constructed a medium-scale prototype hosting 28 Li$_2$MoO$_4$ crystals and 30 Ge light detectors, both operated as cryogenic calorimeters at the Laboratori Nazionali del Gran Sasso (Italy). Despite an unexpected excess of noise in the light detectors, the results of this test proved (i) a thermal stability better than $\pm$0.5 mK at 10 mK, (ii) a good energy resolution of Li$_2$MoO$_4$ bolometers, (6.6 $\pm$ 2.2) keV FWHM at 2615 keV, and (iii) a Li$_2$MoO$_4$ light yield measured by the closest light detector of 0.36 keV/MeV, sufficient to guarantee the particle identification requested by CUPID.	[ { "version": "v1", "created": "Thu, 6 Mar 2025 14:30:18 GMT" } ]	2025-03-07T00:00:00	[ [ "The CUPID Collaboration", "", "" ], [ "Alfonso", "K.", "" ], [ "Armatol", "A.", "" ], [ "Augier", "C.", "" ], [ "Avignone", "F. T.", "III" ], [ "Azzolini", "O.", "" ], [ "Barabash", "A. S.", "" ], [ "Bari", "G.", "" ], [ "Barresi", "A.", "" ], [ "Baudin", "D.", "" ], [ "Bellini", "F.", "" ], [ "Benato", "G.", "" ], [ "Benussi", "L.", "" ], [ "Berest", "V.", "" ], [ "Beretta", "M.", "" ], [ "Bettelli", "M.", "" ], [ "Biassoni", "M.", "" ], [ "Billard", "J.", "" ], [ "Boffelli", "F.", "" ], [ "Boldrini", "V.", "" ], [ "Brandani", "E. D.", "" ], [ "Brofferio", "C.", "" ], [ "Bucci", "C.", "" ], [ "Buchynska", "M.", "" ], [ "Camilleri", "J.", "" ], [ "Campani", "A.", "" ], [ "Cao", "J.", "" ], [ "Capelli", "C.", "" ], [ "Capelli", "S.", "" ], [ "Caracciolo", "V.", "" ], [ "Cardani", "L.", "" ], [ "Carniti", "P.", "" ], [ "Casali", "N.", "" ], [ "Celi", "E.", "" ], [ "Chang", "C.", "" ], [ "Chapellier", "M.", "" ], [ "Chen", "H.", "" ], [ "Chiesa", "D.", "" ], [ "Cintas", "D.", "" ], [ "Clemenza", "M.", "" ], [ "Colantoni", "I.", "" ], [ "Copello", "S.", "" ], [ "Cremonesi", "O.", "" ], [ "Creswick", "R. J.", "" ], [ "D'Addabbo", "A.", "" ], [ "Dafinei", "I.", "" ], [ "Danevich", "F. A.", "" ], [ "De Dominicis", "F.", "" ], [ "De Jesus", "M.", "" ], [ "de Marcillac", "P.", "" ], [ "Dell'Oro", "S.", "" ], [ "Di Domizio", "S.", "" ], [ "Di Lorenzo", "S.", "" ], [ "Dompè", "V.", "" ], [ "Drobizhev", "A.", "" ], [ "Dumoulin", "L.", "" ], [ "Fantini", "G.", "" ], [ "Idrissi", "M. El", "" ], [ "Faverzani", "M.", "" ], [ "Ferri", "E.", "" ], [ "Ferri", "F.", "" ], [ "Ferroni", "F.", "" ], [ "Figueroa-Feliciano", "E.", "" ], [ "Formaggio", "J.", "" ], [ "Franceschi", "A.", "" ], [ "Fu", "S.", "" ], [ "Fujikawa", "B. K.", "" ], [ "Gascon", "J.", "" ], [ "Ghislandi", "S.", "" ], [ "Giachero", "A.", "" ], [ "Girola", "M.", "" ], [ "Gironi", "L.", "" ], [ "Giuliani", "A.", "" ], [ "Gorla", "P.", "" ], [ "Gotti", "C.", "" ], [ "Grant", "C.", "" ], [ "Gras", "P.", "" ], [ "Guillaumon", "P. V.", "" ], [ "Gutierrez", "T. D.", "" ], [ "Han", "K.", "" ], [ "Hansen", "E. V.", "" ], [ "Heeger", "K. M.", "" ], [ "Helis", "D. L.", "" ], [ "Huang", "H. Z.", "" ], [ "Hurst", "M. T.", "" ], [ "Imbert", "L.", "" ], [ "Juillard", "A.", "" ], [ "Karapetrov", "G.", "" ], [ "Keppel", "G.", "" ], [ "Khalife", "H.", "" ], [ "Kobychev", "V. V.", "" ], [ "Kolomensky", "Yu. G.", "" ], [ "Kowalski", "R.", "" ], [ "Lattaud", "H.", "" ], [ "Lefevre", "M.", "" ], [ "Lisovenko", "M.", "" ], [ "Liu", "R.", "" ], [ "Liu", "Y.", "" ], [ "Loaiza", "P.", "" ], [ "Ma", "L.", "" ], [ "Mancarella", "F.", "" ], [ "Manenti", "N.", "" ], [ "Mariani", "A.", "" ], [ "Marini", "L.", "" ], [ "Marnieros", "S.", "" ], [ "Martinez", "M.", "" ], [ "Maruyama", "R. H.", "" ], [ "Mas", "Ph.", "" ], [ "Mayer", "D.", "" ], [ "Mazzitelli", "G.", "" ], [ "Mazzola", "E.", "" ], [ "Mei", "Y.", "" ], [ "Moore", "M. N.", "" ], [ "Morganti", "S.", "" ], [ "Napolitano", "T.", "" ], [ "Nastasi", "M.", "" ], [ "Nikkel", "J.", "" ], [ "Nones", "C.", "" ], [ "Norman", "E. B.", "" ], [ "Novosad", "V.", "" ], [ "Nutini", "I.", "" ], [ "O'Donnell", "T.", "" ], [ "Olivieri", "E.", "" ], [ "Olmi", "M.", "" ], [ "Oregui", "B. T.", "" ], [ "Pagan", "S.", "" ], [ "Pageot", "M.", "" ], [ "Pagnanini", "L.", "" ], [ "Pasciuto", "D.", "" ], [ "Pattavina", "L.", "" ], [ "Pavan", "M.", "" ], [ "Penek", "Ò.", "" ], [ "Peng", "H.", "" ], [ "Pessina", "G.", "" ], [ "Pettinacci", "V.", "" ], [ "Pira", "C.", "" ], [ "Pirro", "S.", "" ], [ "Pochon", "O.", "" ], [ "Poda", "D. V.", "" ], [ "Polakovic", "T.", "" ], [ "Polischuk", "O. G.", "" ], [ "Pottebaum", "E. G.", "" ], [ "Pozzi", "S.", "" ], [ "Previtali", "E.", "" ], [ "Puiu", "A.", "" ], [ "Puranam", "S.", "" ], [ "Quitadamo", "S.", "" ], [ "Rappoldi", "A.", "" ], [ "Raselli", "G. L.", "" ], [ "Ressa", "A.", "" ], [ "Rizzoli", "R.", "" ], [ "Rosenfeld", "C.", "" ], [ "Rosier", "P.", "" ], [ "Rossella", "M.", "" ], [ "Scarpaci", "J. A.", "" ], [ "Schmidt", "B.", "" ], [ "Serino", "R.", "" ], [ "Shaikina", "A.", "" ], [ "Shang", "K.", "" ], [ "Sharma", "V.", "" ], [ "Shlegel", "V. N.", "" ], [ "Singh", "V.", "" ], [ "Sisti", "M.", "" ], [ "Slocum", "P.", "" ], [ "Speller", "D.", "" ], [ "Surukuchi", "P. T.", "" ], [ "Taffarello", "L.", "" ], [ "Tomassini", "S.", "" ], [ "Tomei", "C.", "" ], [ "Torres", "A.", "" ], [ "Torres", "J. A.", "" ], [ "Tozzi", "D.", "" ], [ "Tretyak", "V. I.", "" ], [ "Trotta", "D.", "" ], [ "Velazquez", "M.", "" ], [ "Vetter", "K. J.", "" ], [ "Wagaarachchi", "S. L.", "" ], [ "Wang", "G.", "" ], [ "Wang", "L.", "" ], [ "Wang", "R.", "" ], [ "Welliver", "B.", "" ], [ "Wilson", "J.", "" ], [ "Wilson", "K.", "" ], [ "Winslow", "L. A.", "" ], [ "Xie", "F.", "" ], [ "Xue", "M.", "" ], [ "Yang", "J.", "" ], [ "Yefremenko", "V.", "" ], [ "Umatov", "V. I.", "" ], [ "Zarytskyy", "M. M.", "" ], [ "Zhu", "T.", "" ], [ "Zolotarova", "A.", "" ], [ "Zucchelli", "S.", "" ] ]
1706.02123	Isabel Mira Oldengott	Isabel M. Oldengott, Thomas Tram, Cornelius Rampf and Yvonne Y. Y. Wong	Interacting neutrinos in cosmology: exact description and constraints	25 pages, 11 figures; accepted for publication in JCAP	JCAP 1711 (2017) no.11, 027	10.1088/1475-7516/2017/11/027	null	astro-ph.CO hep-ph	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	We consider the impact of neutrino self-interactions described by an effective four-fermion coupling on cosmological observations. Implementing the exact Boltzmann hierarchy for interacting neutrinos first derived in [arxiv:1409.1577] into the Boltzmann solver CLASS, we perform a detailed numerical analysis of the effects of the interaction on the cosmic microwave background (CMB) anisotropies, and compare our results with known approximations in the literature. While we find good agreement between our exact approach and the relaxation time approximation used in some recent studies, the popular $\left( c_{\text{eff}}^2,c_{\text{vis}}^2 \right)$-parameterisation fails to reproduce the correct scale dependence of the CMB temperature power spectrum. We then proceed to derive constraints on the effective coupling constant $G_{\text{eff}}$ using currently available cosmological data via an MCMC analysis. Interestingly, our results reveal a bimodal posterior distribution, where one mode represents the standard $\Lambda$CDM limit with $G_{\rm eff} \lesssim 10^8 \, G_{\rm F}$, and the other a scenario in which neutrinos self-interact with an effective coupling constant $G_{\rm eff} \simeq 3 \times 10^9 \, G_{\rm F}$.	[ { "version": "v1", "created": "Wed, 7 Jun 2017 10:49:58 GMT" }, { "version": "v2", "created": "Tue, 28 Nov 2017 10:09:54 GMT" } ]	2017-11-29T00:00:00	[ [ "Oldengott", "Isabel M.", "" ], [ "Tram", "Thomas", "" ], [ "Rampf", "Cornelius", "" ], [ "Wong", "Yvonne Y. Y.", "" ] ]
2211.02127	Siddharth Nayak	Siddharth Nayak, Kenneth Choi, Wenqi Ding, Sydney Dolan, Karthik Gopalakrishnan, Hamsa Balakrishnan	Scalable Multi-Agent Reinforcement Learning through Intelligent Information Aggregation	9 pages, 7 figures, 8 tables, 5 pages appendix, Code: https://github.com/nsidn98/InforMARL	null	null	null	cs.MA cs.AI cs.RO	http://creativecommons.org/licenses/by/4.0/	We consider the problem of multi-agent navigation and collision avoidance when observations are limited to the local neighborhood of each agent. We propose InforMARL, a novel architecture for multi-agent reinforcement learning (MARL) which uses local information intelligently to compute paths for all the agents in a decentralized manner. Specifically, InforMARL aggregates information about the local neighborhood of agents for both the actor and the critic using a graph neural network and can be used in conjunction with any standard MARL algorithm. We show that (1) in training, InforMARL has better sample efficiency and performance than baseline approaches, despite using less information, and (2) in testing, it scales well to environments with arbitrary numbers of agents and obstacles. We illustrate these results using four task environments, including one with predetermined goals for each agent, and one in which the agents collectively try to cover all goals. Code available at https://github.com/nsidn98/InforMARL.	[ { "version": "v1", "created": "Thu, 3 Nov 2022 20:02:45 GMT" }, { "version": "v2", "created": "Sun, 12 Feb 2023 16:30:38 GMT" }, { "version": "v3", "created": "Tue, 16 May 2023 15:17:46 GMT" } ]	2023-05-17T00:00:00	[ [ "Nayak", "Siddharth", "" ], [ "Choi", "Kenneth", "" ], [ "Ding", "Wenqi", "" ], [ "Dolan", "Sydney", "" ], [ "Gopalakrishnan", "Karthik", "" ], [ "Balakrishnan", "Hamsa", "" ] ]
physics/0306096	J. R. Bogart	J. Bogart	Calibration Infrastructure for the GLAST LAT	Talk from the 2003 Computing in High Energy and Nuclear Physics (CHEP03), La Jolla, Ca, USA, March 2003, 5 pages, LaTeX, 2 eps figures. PSN MOKT001	null	null	SLAC-PUB-9890	physics.ins-det	null	The GLAST LAT calibration infrastructure is designed to accommodate a wide range of time-varying data types, including at a minimum hardware status bits, conversion constants, and alignment for the GLAST LAT instrument and its prototypes. The system will support persistent XML and ROOT data to begin with; other physical formats will be added if necessary. In addition to the "bulk data", each data set will have associated with it a row in a rdbms table containing metadata, such as timestamps, data format, pointer to the location of the bulk data, etc., which will be used to identify and locate the appropriate data set for a particular application. As GLAST uses the Gaudi framework for event processing, the Calibration Infrastructure makes use of several Gaudi elements and concepts, such as conversion services, converters and data objects and implements the prescribed Gaudi interfaces (IDetDataSvc, IValidity, ..). This insures that calibration data will always be valid and appropriate for the event being processed. The persistent representation of a calibration dataset as two physical pieces in different formats complicates the conversion process somewhat: two cooperating conversion services are involved in the conversion of any single dataset.	[ { "version": "v1", "created": "Thu, 12 Jun 2003 17:02:25 GMT" } ]	2007-05-23T00:00:00	[ [ "Bogart", "J.", "" ] ]
1408.3067	Marianna Safronova	M. S. Safronova, U. I. Safronova, and Charles W. Clark	Relativistic all-order calculations of Th, Th$^{+}$ and Th$^{2+}$ atomic properties	13 pages	null	10.1103/PhysRevA.90.032512	null	physics.atom-ph physics.optics quant-ph	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	Excitation energies, term designations, and $g$-factors of Th, Th$^{+}$ and Th$^{2+}$ are determined using a relativistic hybrid configuration interaction (CI) + all-order approach that combines configuration interaction and linearized coupled-cluster methods. The results are compared with other theory and experiment where available. We find some "vanishing" $g$-factors, similar to those known in lanthanide spectra. Reduced matrix elements, oscillator strengths, transition rates, and lifetimes are determined for Th$^{2+}$. To estimate the uncertainties of our results, we compared our values with the available experimental lifetimes for higher $5f7p\ ^3G_{4}$, $7s7p\ ^3P_{0}$, $7s7p\ ^3P_{1}$, and $6d7p\ ^3F_{4}$ levels of Th$^{2+}$. These calculations provide a benchmark test of the CI+all-order method for heavy systems with several valence electrons and yield recommended values for transition rates and lifetimes of Th$^{2+}$.	[ { "version": "v1", "created": "Wed, 13 Aug 2014 17:59:31 GMT" } ]	2015-06-22T00:00:00	[ [ "Safronova", "M. S.", "" ], [ "Safronova", "U. I.", "" ], [ "Clark", "Charles W.", "" ] ]
1411.4532	Jude Laverock	J. Laverock and S. Kittiwatanakul and A. A. Zakharov and Y. R. Niu and B. Chen and S. A. Wolf and J. W. Lu and K. E. Smith	Direct Observation of Decoupled Structural and Electronic Transitions and an Ambient Pressure Monoclinic-Like Metallic Phase of VO$_2$	null	Phys. Rev. Lett. 113, 216402 (2014)	10.1103/PhysRevLett.113.216402	null	cond-mat.str-el cond-mat.mes-hall cond-mat.mtrl-sci	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	We report the simultaneous measurement of the structural and electronic components of the metal-insulator transition of VO$_2$ using electron and photoelectron spectroscopies and microscopies. We show that these evolve over different temperature scales, and are separated by an unusual monoclinic-like metallic phase. Our results provide conclusive evidence that the new monoclinic-like metallic phase, recently identified in high-pressure and nonequilibrium measurements, is accessible in the thermodynamic transition at ambient pressure, and we discuss the implications of these observations on the nature of the MIT in VO$_2$.	[ { "version": "v1", "created": "Mon, 17 Nov 2014 16:25:21 GMT" } ]	2014-11-18T00:00:00	[ [ "Laverock", "J.", "" ], [ "Kittiwatanakul", "S.", "" ], [ "Zakharov", "A. A.", "" ], [ "Niu", "Y. R.", "" ], [ "Chen", "B.", "" ], [ "Wolf", "S. A.", "" ], [ "Lu", "J. W.", "" ], [ "Smith", "K. E.", "" ] ]
2302.00707	Melanie Bancilhon	Melanie Bancilhon, AJ Wright, Sunwoo Ha, Jordan Crouser, Alvitta Ottley	Why Combining Text and Visualization Could Improve Bayesian Reasoning: A Cognitive Load Perspective	null	null	10.1145/3544548.3581218	null	cs.HC	http://creativecommons.org/licenses/by/4.0/	Investigations into using visualization to improve Bayesian reasoning and advance risk communication have produced mixed results, suggesting that cognitive ability might affect how users perform with different presentation formats. Our work examines the cognitive load elicited when solving Bayesian problems using icon arrays, text, and a juxtaposition of text and icon arrays. We used a three-pronged approach to capture a nuanced picture of cognitive demand and measure differences in working memory capacity, performance under divided attention using a dual-task paradigm, and subjective ratings of self-reported effort. We found that individuals with low working memory capacity made fewer errors and experienced less subjective workload when the problem contained an icon array compared to text alone, showing that visualization improves accuracy while exerting less cognitive demand. We believe these findings can considerably impact accessible risk communication, especially for individuals with low working memory capacity.	[ { "version": "v1", "created": "Wed, 1 Feb 2023 19:02:26 GMT" } ]	2023-02-03T00:00:00	[ [ "Bancilhon", "Melanie", "" ], [ "Wright", "AJ", "" ], [ "Ha", "Sunwoo", "" ], [ "Crouser", "Jordan", "" ], [ "Ottley", "Alvitta", "" ] ]
1109.3913	Jorge Sanz-Forcada	J. Sanz-Forcada, I. Ribas, G. Micela, A. Pollock, D. Garcia-Alvarez, E. Solano, C. Eiroa	Planets and X-rays: a radiation diet	Proceedings of the 16th Workshop on Cool Stars, Stellar Systems, and the Sun (2010, PASP conference series, in press). Preliminar results	null	null	null	astro-ph.EP	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	According to theory, high energy emission from the coronae of cool stars can severely erode the atmosphere of orbiting planets. To test the long term effects of the erosion we study a large sample of planet-hosting stars observed in X-rays. The results reveal that massive planets (Mp sin i > 1.5 Mj) may survive only if exposed to low accumulated coronal radiation. The planet HD 209458 b might have lost more than 1 Mj already, and other cases, like tau Boo b, could be losing mass at a rate of 3.4 Earth masses per Gyr. The strongest erosive effects would take place during the first stages of the stellar life, when the faster rotation generates more energetic coronal radiation. The planets with higher density seem to resist better the radiation effects, as foreseen by models. Current models need to be improved to explain the observed distribution of planetary masses with the coronal radiation received.	[ { "version": "v1", "created": "Sun, 18 Sep 2011 21:38:43 GMT" } ]	2015-03-19T00:00:00	[ [ "Sanz-Forcada", "J.", "" ], [ "Ribas", "I.", "" ], [ "Micela", "G.", "" ], [ "Pollock", "A.", "" ], [ "Garcia-Alvarez", "D.", "" ], [ "Solano", "E.", "" ], [ "Eiroa", "C.", "" ] ]
math/9804138	Nicola Ciccoli	N. Ciccoli	Induction of quantum group representations	16 pages, Latex file. Submitted to Journal of Geometry and Physics	null	10.1016/S0393-0440(99)00004-2	DM-UNIBO 96/16	math.QA	null	Induced representations for quantum groups are defined starting from coisotropic quantum subgroups and their main properties are proved. When the coisotropic quantum subgroup has a suitably defined section such representations can be realized on associated quantum bundles on general embeddable quantum homogeneous spaces.	[ { "version": "v1", "created": "Wed, 29 Apr 1998 18:23:28 GMT" } ]	2009-10-31T00:00:00	[ [ "Ciccoli", "N.", "" ] ]
1503.03991	Jean-Christophe Aval	Jean-Christophe Aval and Fran\c{c}ois Bergeron	Interlaced rectangular parking functions	null	null	null	null	math.CO	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	The aim of this work is to extend to a general $S_m\times S_n$-module context the Grossman-Bizley paradigm that allows the enumeration of Dyck paths in a $m\times n$-rectangle. We obtain an explicit formula for the the "bi-Frobenius" characteristic of what we call {\em interlaced} rectangular parking functions in an $m\times n$-rectangle. These are obtained by labelling the $n$ vertical steps of an $m\times n$-Dyck path by the numbers from $1$ to $n$, together with an independent labelling of its horizontal steps by integers from $1$ to $m$. Our formula specializes to give the Frobenius characteristic of the $S_n$-module of $m\times n$-parking functions in the general situation. Hence, it subsumes the result of Armstrong-Loehr-Warrington which furnishes such a formula for the special case when $m$ and $n$ are coprime integers.	[ { "version": "v1", "created": "Fri, 13 Mar 2015 09:14:53 GMT" } ]	2015-03-16T00:00:00	[ [ "Aval", "Jean-Christophe", "" ], [ "Bergeron", "François", "" ] ]
1907.12693	Guillermo Arreaga-Garcia	G. Arreaga-Garcia	The effects of a compressive velocity pulse on a collapsing turbulent clump	accepted for publication in Astron. Nachrichten	null	10.1002/asna.201913548	null	astro-ph.SR astro-ph.GA	http://creativecommons.org/publicdomain/zero/1.0/	High-resolution hydrodynamical simulations are presented to follow the gravitational collapse of a uniform turbulent clump, upon which a purely radial compressive velocity pulse is activated in the midst of the evolution of the clump, when its turbulent state has been fully developed. The shape of the velocity pulse is determined basically by two free parameters: the velocity $V_0$ and the initial radial position $r_0$. In the present paper, models are considered in which the velocity $V_0$ takes the values 2, 5, 10, 20, and 50 times the speed of sound of the clump $c_0$, while $r_0$ is fixed for all the models. The collapse of the model with $2 \, c_0$ goes faster as a consequence of the velocity pulse, while the cluster formed in the central region of the isolated clump mainly stays the same. In the models with greater velocity $V_0$, the evolution of the isolated clump is significantly changed, so that a dense shell of gas forms around $r_0$ and moves radially inward. The radial profile of the density and velocity as well as the mass contained in the dense shell of gas are calculated, and it is found that (i) the higher the velocity $V_0$, the less mass is contained in the shell; (ii) there is a critical velocity of the pulse, around $10 \, c_0$, such that for shock models with a lower velocity, there will be a well defined dense central region in the shocked clump surrounded by the shell.	[ { "version": "v1", "created": "Tue, 30 Jul 2019 00:22:08 GMT" } ]	2019-10-09T00:00:00	[ [ "Arreaga-Garcia", "G.", "" ] ]
2407.21428	Dengsheng Chen	Dengsheng Chen, Jie Hu, Xiaoming Wei, Enhua Wu	Deformable 3D Shape Diffusion Model	null	null	null	null	cs.GR cs.AI	http://creativecommons.org/licenses/by-nc-sa/4.0/	The Gaussian diffusion model, initially designed for image generation, has recently been adapted for 3D point cloud generation. However, these adaptations have not fully considered the intrinsic geometric characteristics of 3D shapes, thereby constraining the diffusion model's potential for 3D shape manipulation. To address this limitation, we introduce a novel deformable 3D shape diffusion model that facilitates comprehensive 3D shape manipulation, including point cloud generation, mesh deformation, and facial animation. Our approach innovatively incorporates a differential deformation kernel, which deconstructs the generation of geometric structures into successive non-rigid deformation stages. By leveraging a probabilistic diffusion model to simulate this step-by-step process, our method provides a versatile and efficient solution for a wide range of applications, spanning from graphics rendering to facial expression animation. Empirical evidence highlights the effectiveness of our approach, demonstrating state-of-the-art performance in point cloud generation and competitive results in mesh deformation. Additionally, extensive visual demonstrations reveal the significant potential of our approach for practical applications. Our method presents a unique pathway for advancing 3D shape manipulation and unlocking new opportunities in the realm of virtual reality.	[ { "version": "v1", "created": "Wed, 31 Jul 2024 08:24:42 GMT" } ]	2024-08-01T00:00:00	[ [ "Chen", "Dengsheng", "" ], [ "Hu", "Jie", "" ], [ "Wei", "Xiaoming", "" ], [ "Wu", "Enhua", "" ] ]
2506.06935	Willie Padilla	Darui Lu, Jordan M. Malof, and Willie J. Padilla	An Agentic Framework for Autonomous Metamaterial Modeling and Inverse Design	22 pages, 6 figures	null	null	null	cs.AI cond-mat.mtrl-sci	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	Recent significant advances in integrating multiple Large Language Model (LLM) systems have enabled Agentic Frameworks capable of performing complex tasks autonomously, including novel scientific research. We develop and demonstrate such a framework specifically for the inverse design of photonic metamaterials. When queried with a desired optical spectrum, the Agent autonomously proposes and develops a forward deep learning model, accesses external tools via APIs for tasks like simulation and optimization, utilizes memory, and generates a final design via a deep inverse method. The framework's effectiveness is demonstrated in its ability to automate, reason, plan, and adapt. Notably, the Agentic Framework possesses internal reflection and decision flexibility, permitting highly varied and potentially novel outputs.	[ { "version": "v1", "created": "Sat, 07 Jun 2025 22:10:05 GMT" }, { "version": "v2", "created": "Tue, 15 Jul 2025 11:01:25 GMT" } ]	2025-07-16T00:00:00	[ [ "Lu", "Darui", "" ], [ "Malof", "Jordan M.", "" ], [ "Padilla", "Willie J.", "" ] ]
1712.08196	Sergey V. Lototsky	H.-J. Kim and S. V. Lototsky	Heat Equation With a Geometric Rough Path Potential in One Space Dimension: Existence and Regularity of Solution	null	null	null	null	math.AP math.PR	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	A solution of the heat equation with a distribution-valued potential is constructed by regularization. When the potential is the generalized derivative of a H\"{o}lder continuous function, regularity of the resulting solution is in line with the standard parabolic theory.	[ { "version": "v1", "created": "Thu, 21 Dec 2017 20:17:36 GMT" } ]	2017-12-25T00:00:00	[ [ "Kim", "H. -J.", "" ], [ "Lototsky", "S. V.", "" ] ]
astro-ph/9707323	Dante Minniti	The MACHO Collaboration: C. Alcock, R.A. Allsman, D.R. Alves, T.S. Axelrod, A. Becker, D.P. Bennett, K.H. Cook, K.C. Freeman, K. Griest, M.J. Lehner, S.L. Marshall, D. Minniti, B.A. Peterson, M.R. Pratt, P.J. Quinn, A.W. Rodgers, A. Rorabeck, C.W. Stubbs, W. Sutherland, A. Tomaney, T. Vandehei, and D.L. Welch	Bulge delta Scuti Stars in the MACHO Database	6 pages, PostScript file. To appear in IAU Symp. 189 on "Fundamental Stellar Properties: Confrontation between Theory and Observations", eds. T. Bedding et al. (Kluwer: Dordrecht), 1997	null	null	null	astro-ph	null	We describe the search for delta Scuti stars in the MACHO database of bulge fields. Concentrating on a sample of high amplitude delta Scutis, we examine the light curves and pulsation modes. We also discuss their spatial distribution and evolutionary status using mean colors and absolute magnitudes.	[ { "version": "v1", "created": "Tue, 29 Jul 1997 19:10:47 GMT" } ]	2007-05-23T00:00:00	[ [ "The MACHO Collaboration", "", "" ], [ "Alcock", "C.", "" ], [ "Allsman", "R. A.", "" ], [ "Alves", "D. R.", "" ], [ "Axelrod", "T. S.", "" ], [ "Becker", "A.", "" ], [ "Bennett", "D. P.", "" ], [ "Cook", "K. H.", "" ], [ "Freeman", "K. C.", "" ], [ "Griest", "K.", "" ], [ "Lehner", "M. J.", "" ], [ "Marshall", "S. L.", "" ], [ "Minniti", "D.", "" ], [ "Peterson", "B. A.", "" ], [ "Pratt", "M. R.", "" ], [ "Quinn", "P. J.", "" ], [ "Rodgers", "A. W.", "" ], [ "Rorabeck", "A.", "" ], [ "Stubbs", "C. W.", "" ], [ "Sutherland", "W.", "" ], [ "Tomaney", "A.", "" ], [ "Vandehei", "T.", "" ], [ "Welch", "D. L.", "" ] ]
astro-ph/9608024	Belinda Wilkes	B. J. Wilkes, P. J. Green, S. Mathur and J. C. McDowell (Harvard-Smithsonian Center for Astrophysics)	Emission Lines and the Spectral Energy Distributions of Quasars	latex file and sty file. To appear in Emission Lines in Active Galaxies: New Methods and Techniques, ed. B.M.Peterson, F.-Z. CHeng and A.S.Wilson (San Pranciscio: Astronomical Society of the Pacific) in press (1997)	null	null	null	astro-ph	null	Many years of study have failed to conclusively establish relations between a quasar's spectral energy distribution (SED) and the emission lines it is thought to produce. This is at least partially due to the lack of well-observed SEDs. We present initial results from a line--SED study for a sample of 43 quasars and active galaxies for which we have optical and ultra-violet spectra and far-infrared--X-ray SEDs. We present the results of tests for correlations between line equivalent widths and SED luminosity and slope parameters and compare these results to those from earlier studies. We find that the Baldwin effect is weaker when the luminosity is defined close to the ionising continuum of that line and conclude that the detailed SED is likely to be important in making further progress.	[ { "version": "v1", "created": "Mon, 5 Aug 1996 19:24:33 GMT" } ]	2007-05-23T00:00:00	[ [ "Wilkes", "B. J.", "", "Harvard-Smithsonian Center for Astrophysics" ], [ "Green", "P. J.", "", "Harvard-Smithsonian Center for Astrophysics" ], [ "Mathur", "S.", "", "Harvard-Smithsonian Center for Astrophysics" ], [ "McDowell", "J. C.", "", "Harvard-Smithsonian Center for Astrophysics" ] ]
astro-ph/0401442	Scott Croom	Scott Croom (1), David Schade (2), Brian Boyle (3), Tom Shanks (4), Lance Miller (5), Robert Smith (6) ((1) Anglo-Australian Observatory, (2) Dominion Astrophysical Observatory, (3) Australia Telescope National Facility, (4) Durham University, (5) Oxford University, (6) Liverpool John Moores University)	Gemini imaging of QSO host galaxies at z~2	13 pages, 8 figures, using emulateapj.cls. Accepted for publication in ApJ. Version with high quality figures available from http://www.aao.gov.au/local/www/scroom/publications/	Astrophys.J.606:126-138,2004	10.1086/382747	null	astro-ph	null	We present results of a Gemini adaptive optics (AO) imaging program to investigate the host galaxies of typical QSOs at z~2. Our aim is to study the host galaxies of typical, L_qso QSOs at the epoch of peak QSO and star formation activity. The large database of faint QSOs provided by the 2dF QSO Redshift Survey allows us to select a sample of QSOs at z=1.75-2.5 which have nearby (<12 arcsecond separation) bright stars suitable for use as AO guide stars. We have observed a sample of 9 QSOs. The images of these sources have AO corrected full-width at half-maximum of between 0.11 and 0.25 arcseconds. We use multiple observations of point spread function (PSF) calibration star pairs in order to quantify any uncertainty in the PSF. We then factored these uncertainties into our modelling of the QSO plus host galaxy. In only one case did we convincingly detect a host (2QZ J133311.4+001949, at z=1.93). This host galaxy has K=18.5+-0.2 mag with a half-light radius, r_e=0.55+-0.1'', equivalent to ~3L_gal assuming a simple passively evolving model. From detailed simulations of our host galaxy modelling process, we find that for four of our targets we should be sensitive to host galaxies that are equivalent to ~2L_gal (passively evolved). Our non-detections therefore place tight constraints on the properties of L_qso QSO host galaxies, which can be no brighter (after allowing for passive evolution) than the host galaxies of L*_qso AGN at low redshift, although the QSOs themselves are a factor of ~50 brighter. This implies that either the fueling efficiency is much greater at high redshift, or that more massive black holes are active at high redshift.	[ { "version": "v1", "created": "Wed, 21 Jan 2004 22:39:52 GMT" } ]	2011-03-10T00:00:00	[ [ "Croom", "Scott", "" ], [ "Schade", "David", "" ], [ "Boyle", "Brian", "" ], [ "Shanks", "Tom", "" ], [ "Miller", "Lance", "" ], [ "Smith", "Robert", "" ] ]
0902.3801	Bin Wang	Bin Wang	Whittaker Modules for Graded Lie Algebras	11pages, fixed a number of errors	null	null	null	math.RT	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	In this paper, we study Whittaker modules for graded Lie algebras. We define Whittaker modules for a class of graded Lie algebras and obtain a bijective correspondence between the set of isomorphism classes of Whittaker modules and the set of ideals of a polynomial ring, parallel to a result from the classical setting and the case of the Virasoro algebra. As a consequence of this, we obtain a classification of simple Whittaker modules for such algebras. Also, we study some concrete algebras as examples.	[ { "version": "v1", "created": "Sun, 22 Feb 2009 16:21:01 GMT" }, { "version": "v2", "created": "Wed, 4 Mar 2009 14:04:50 GMT" } ]	2009-03-04T00:00:00	[ [ "Wang", "Bin", "" ] ]
1102.2642	Brian LeRoy	Jiamin Xue, Javier Sanchez-Yamagishi, D. Bulmash, Philippe Jacquod, A. Deshpande, K. Watanabe, T. Taniguchi, Pablo Jarillo-Herrero, B.J. LeRoy	STM Spectroscopy of ultra-flat graphene on hexagonal boron nitride	Nature Materials advance online publication 13/02/2011	Nature Materials 10, 282--285 (2011)	10.1038/nmat2968	null	cond-mat.mtrl-sci cond-mat.mes-hall	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	Graphene has demonstrated great promise for future electronics technology as well as fundamental physics applications because of its linear energy-momentum dispersion relations which cross at the Dirac point. However, accessing the physics of the low density region at the Dirac point has been difficult because of the presence of disorder which leaves the graphene with local microscopic electron and hole puddles, resulting in a finite density of carriers even at the charge neutrality point. Efforts have been made to reduce the disorder by suspending graphene, leading to fabrication challenges and delicate devices which make local spectroscopic measurements difficult. Recently, it has been shown that placing graphene on hexagonal boron nitride (hBN) yields improved device performance. In this letter, we use scanning tunneling microscopy to show that graphene conforms to hBN, as evidenced by the presence of Moire patterns in the topographic images. However, contrary to recent predictions, this conformation does not lead to a sizable band gap due to the misalignment of the lattices. Moreover, local spectroscopy measurements demonstrate that the electron-hole charge fluctuations are reduced by two orders of magnitude as compared to those on silicon oxide. This leads to charge fluctuations which are as small as in suspended graphene, opening up Dirac point physics to more diverse experiments than are possible on freestanding devices.	[ { "version": "v1", "created": "Sun, 13 Feb 2011 22:10:06 GMT" } ]	2011-05-04T00:00:00	[ [ "Xue", "Jiamin", "" ], [ "Sanchez-Yamagishi", "Javier", "" ], [ "Bulmash", "D.", "" ], [ "Jacquod", "Philippe", "" ], [ "Deshpande", "A.", "" ], [ "Watanabe", "K.", "" ], [ "Taniguchi", "T.", "" ], [ "Jarillo-Herrero", "Pablo", "" ], [ "LeRoy", "B. J.", "" ] ]
1507.05620	Wout Merbis	Arjun Bagchi, Daniel Grumiller and Wout Merbis	Stress tensor correlators in three-dimensional gravity	6 pages, v2: corrected signs	Phys. Rev. D 93, 061502 (2016)	10.1103/PhysRevD.93.061502	MIT-CTP-4694, TUW-15-13	hep-th gr-qc	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	We calculate holographically arbitrary n-point correlators of the boundary stress tensor in three-dimensional Einstein gravity with negative or vanishing cosmological constant. We provide explicit expressions up to 5-point (connected) correlators and show consistency with the Galilean conformal field theory Ward identities and recursion relations of correlators, which we derive. This provides a novel check of flat space holography in three dimensions.	[ { "version": "v1", "created": "Mon, 20 Jul 2015 20:00:34 GMT" }, { "version": "v2", "created": "Tue, 11 Aug 2015 11:29:26 GMT" } ]	2016-03-23T00:00:00	[ [ "Bagchi", "Arjun", "" ], [ "Grumiller", "Daniel", "" ], [ "Merbis", "Wout", "" ] ]
1911.11159	Mariel Supina	Federico Ardila, Mariel Supina, Andr\'es R. Vindas-Mel\'endez	The equivariant Ehrhart theory of the permutahedron	v2: Minor edits. To appear in Proceedings of the American Mathematical Society. 15 pages, 2 figures, 3 tables, comments welcome	null	null	null	math.CO	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	Equivariant Ehrhart theory enumerates the lattice points in a polytope with respect to a group action. Answering a question of Stapledon, we describe the equivariant Ehrhart theory of the permutahedron, and we prove his Effectiveness Conjecture in this special case.	[ { "version": "v1", "created": "Mon, 25 Nov 2019 19:01:03 GMT" }, { "version": "v2", "created": "Fri, 17 Jul 2020 16:55:50 GMT" } ]	2020-07-20T00:00:00	[ [ "Ardila", "Federico", "" ], [ "Supina", "Mariel", "" ], [ "Vindas-Meléndez", "Andrés R.", "" ] ]
1211.3618	Edward Malec	Janusz Karkowski and Edward Malec	Bondi accretion onto cosmological black holes	misprints corrected, matches published version	Phys. Rev. D15, vol. 87, 04400(2013)	10.1103/PhysRevD.87.044007	null	gr-qc astro-ph.CO	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	In this paper we investigate a steady accretion within the Einstein-Straus vacuole, in the presence of the cosmological constant. The dark energy damps the mass accretion rate and --- above certain limit --- completely stops the steady accretion onto black holes, which in particular is prohibited in the inflation era and after (roughly) $10^{12}$ years from Big Bang (assuming the presently known value of the cosmological constant). Steady accretion would not exist in the late phases of the Penrose's scenario - known as the Weyl curvature hypothesis - of the evolution of the Universe.	[ { "version": "v1", "created": "Thu, 15 Nov 2012 14:40:42 GMT" }, { "version": "v2", "created": "Wed, 20 Feb 2013 12:41:00 GMT" } ]	2015-06-12T00:00:00	[ [ "Karkowski", "Janusz", "" ], [ "Malec", "Edward", "" ] ]
hep-ph/0505223	Vittorio Lubicz	Vittorio Lubicz	Determination of V_us: recent progresses from theory	Prepared for 17th Les Rencontres de Physique de la Vallee d'Aoste: Results and Perspectives in Particle Physics, La Thuile, Italy, February 27-March 5, 2005	null	null	null	hep-ph	null	Recent experimental and theoretical results on kaon semileptonic decays have significantly improved the determination of the CKM matrix element V_us. After briefly summarizing the impact of the new experimental determinations, I will concentrate in this talk on the theoretical progresses, coming in particular from lattice QCD calculations. These results lead to the estimate \|V_us\|=0.2250 +- 0.0021, in good agreement with the expectation based on the determination of \|V_ud\| and the unitarity of the CKM matrix.	[ { "version": "v1", "created": "Thu, 26 May 2005 09:03:54 GMT" } ]	2007-05-23T00:00:00	[ [ "Lubicz", "Vittorio", "" ] ]
quant-ph/0310137	Andrew Scott	A. J. Scott	Multipartite entanglement, quantum-error-correcting codes, and entangling power of quantum evolutions	13 pages, 1 figure	Phys. Rev. A 69, 052330 (2004)	10.1103/PhysRevA.69.052330	null	quant-ph	null	We investigate the average bipartite entanglement, over all possible divisions of a multipartite system, as a useful measure of multipartite entanglement. We expose a connection between such measures and quantum-error-correcting codes by deriving a formula relating the weight distribution of the code to the average entanglement of encoded states. Multipartite entangling power of quantum evolutions is also investigated.	[ { "version": "v1", "created": "Tue, 21 Oct 2003 23:33:49 GMT" }, { "version": "v2", "created": "Tue, 30 Dec 2003 19:55:57 GMT" }, { "version": "v3", "created": "Tue, 27 Jan 2004 01:10:13 GMT" } ]	2007-05-23T00:00:00	[ [ "Scott", "A. J.", "" ] ]
2502.13087	Paolo Grossi	Paolo Grossi and Federico Moretti	An explicit class of Lagrangian surfaces	19 pages, 3 figures. Comments welcome	null	null	null	math.AG	http://creativecommons.org/licenses/by-nc-sa/4.0/	We construct a family of general type surfaces with $q=4$, $p_g=6$ and $K^2=24$. These surfaces enjoy some interesting properties: they are Lagrangian in their Albanese variety and their canonical map is $2:1$ onto a degree $12$ surface in $\mathbb P^5$ with $44$ even nodes.	[ { "version": "v1", "created": "Tue, 18 Feb 2025 17:53:12 GMT" } ]	2025-02-19T00:00:00	[ [ "Grossi", "Paolo", "" ], [ "Moretti", "Federico", "" ] ]
1510.03955	Benjamin Ransford	Benjamin Ransford and Luis Ceze	SAP: an Architecture for Selectively Approximate Wireless Communication	null	null	null	null	cs.NI	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	Integrity checking is ubiquitous in data networks, but not all network traffic needs integrity protection. Many applications can tolerate slightly damaged data while still working acceptably, trading accuracy versus efficiency to save time and energy. Such applications should be able to receive damaged data if they so desire. In today's network stacks, lower-layer integrity checks discard damaged data regardless of the application's wishes, violating the End-to-End Principle. This paper argues for optional integrity checking and gently redesigns a commodity network architecture to support integrity-unprotected data. Our scheme, called Selective Approximate Protocol (SAP), allows applications to coordinate multiple network layers to accept potentially damaged data. Unlike previous schemes that targeted video or media streaming, SAP is generic. SAP's improved throughput and decreased retransmission rate is a good match for applications in the domain of approximate computing. Implemented atop WiFi as a case study, SAP works with existing physical layers and requires no hardware changes. SAP's benefits increase as channel conditions degrade. In tests of an error-tolerant file-transfer application over WiFi, SAP sped up transmission by about 30% on average.	[ { "version": "v1", "created": "Wed, 14 Oct 2015 03:18:39 GMT" } ]	2015-10-15T00:00:00	[ [ "Ransford", "Benjamin", "" ], [ "Ceze", "Luis", "" ] ]
1509.00620	X. H. Chen	B. Lei, J. H. Cui, Z. J. Xiang, C. Shang, N. Z. Wang, G. J. Ye, X. G. Luo, T. Wu, Z. Sun and X. H. Chen	Evolution of high-temperature superconductivity from low-Tc phase tuned by carrier concentration in FeSe thin flakes	15 pages, 4 figures	Phys. Rev. Lett. 116, 077002 (2016)	10.1103/PhysRevLett.116.077002	null	cond-mat.supr-con cond-mat.str-el	http://arxiv.org/licenses/nonexclusive-distrib/1.0/	In contrast to bulk FeSe superconductor, heavily electron-doped FeSe-derived superconductors show relatively high Tc without hole Fermi surfaces and nodal superconducting gap structure, which pose great challenges on pairing theories in the iron-based superconductors. In the heavily electron-doped FeSe-based superconductors, the dominant factors and the exact working mechanism that is responsible for the high Tc need to be clarified. In particular, a clean control of carrier concentration remains to be a challenge for revealing how superconductivity and Fermi surface topology evolves with carrier concentration in bulk FeSe. Here, we report the evolution of superconductivity in the FeSe thin flake with systematically regulated carrier concentrations by liquid-gating technique. High-temperature superconductivity at 48 K can be achieved only with electron doping tuned by gate voltage in FeSe thin flake with Tc less than 10 K. This is the first time to achieve such a high temperature superconductivity in FeSe without either epitaxial interface or external pressure. It definitely proves that the simple electron-doping process is able to induce high-temperature superconductivity with Tc as high as 48 K in bulk FeSe. Intriguingly, our data also indicates that the superconductivity is suddenly changed from low-Tc phase to high-Tc phase with a Lifshitz transition at certain carrier concentration. These results help us to build a unified picture to understand the high-temperature superconductivity among all FeSe-derived superconductors and shed light on further pursuit of higher Tc in these materials.	[ { "version": "v1", "created": "Wed, 2 Sep 2015 09:53:34 GMT" } ]	2016-02-24T00:00:00	[ [ "Lei", "B.", "" ], [ "Cui", "J. H.", "" ], [ "Xiang", "Z. J.", "" ], [ "Shang", "C.", "" ], [ "Wang", "N. Z.", "" ], [ "Ye", "G. J.", "" ], [ "Luo", "X. G.", "" ], [ "Wu", "T.", "" ], [ "Sun", "Z.", "" ], [ "Chen", "X. H.", "" ] ]

1406.4031

John ZuHone

J. A. ZuHone (NASA/GSFC, U. Maryland), M. W. Kunz (Princeton), M. Markevitch (NASA/GSFC), J. M. Stone (Princeton), V. Biffi (SISSA)

The Effect of Anisotropic Viscosity on Cold Fronts in Galaxy Clusters

v1: 20 pages, 16 figures, submitted to the Astrophysical Journal. v2: fixed some typos. v3: version accepted by referee, 21 pages, 18 figures

null

10.1088/0004-637X/798/2/90

null

astro-ph.CO astro-ph.HE

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Cold fronts -- contact discontinuities in the intracluster medium (ICM) of galaxy clusters -- should be disrupted by Kelvin-Helmholtz (K-H) instabilities due to the associated shear velocity. However, many observed cold fronts appear stable. This opens the possibility to place constraints on microphysical mechanisms that stabilize them, such as the ICM viscosity and/or magnetic fields. We performed exploratory high-resolution simulations of cold fronts arising from subsonic gas sloshing in cluster cores using the grid-based Athena MHD code, comparing the effects of isotropic Spitzer and anisotropic Braginskii viscosity (expected in a magnetized plasma). Magnetized simulations with full Braginskii viscosity or isotropic Spitzer viscosity reduced by a factor f ~ 0.1 are both in qualitative agreement with observations in terms of suppressing K-H instabilities. The RMS velocity of turbulence within the sloshing region is only modestly reduced by Braginskii viscosity. We also performed unmagnetized simulations with and without viscosity and find that magnetic fields have a substantial effect on the appearance of the cold fronts, even if the initial field is weak and the viscosity is the same. This suggests that determining the dominant suppression mechanism of a given cold front from X-ray observations (e.g. viscosity or magnetic fields) by comparison with simulations is not straightforward. Finally, we performed simulations including anisotropic thermal conduction, and find that including Braginskii viscosity in these simulations does not significant affect the evolution of cold fronts; they are rapidly smeared out by thermal conduction, as in the inviscid case.

[ { "version": "v1", "created": "Mon, 16 Jun 2014 14:32:55 GMT" }, { "version": "v2", "created": "Tue, 17 Jun 2014 13:15:02 GMT" }, { "version": "v3", "created": "Fri, 2 Jan 2015 22:14:42 GMT" } ]

2015-06-22T00:00:00

[ [ "ZuHone", "J. A.", "", "NASA/GSFC, U. Maryland" ], [ "Kunz", "M. W.", "", "Princeton" ], [ "Markevitch", "M.", "", "NASA/GSFC" ], [ "Stone", "J. M.", "", "Princeton" ], [ "Biffi", "V.", "", "SISSA" ] ]

hep-th/0502135

Eugeny Babichev

E. Babichev and M. Kachelriess

Constraining cosmic superstrings with dilaton emission

10 pages, 3 figures; v2: Fig 1 is corrected

Phys.Lett. B614 (2005) 1-6

10.1016/j.physletb.2005.03.053

MPP-2005-11

hep-th astro-ph

null

Brane inflation predicts the production of cosmic superstrings with tension 10^{-12}<G\mu<10^{-7}. Superstring theory predicts also the existence of a dilaton with a mass that is at most of the order of the gravitino mass. We show that the emission of dilatons imposes severe constraints on the allowed evolution of a cosmic superstring network. In particular, the detection of gravitational wave burst from cosmic superstrings by LIGO is only possible if the typical length of string loops is much smaller than usually assumed.

[ { "version": "v1", "created": "Tue, 15 Feb 2005 13:06:49 GMT" }, { "version": "v2", "created": "Fri, 6 May 2005 15:28:54 GMT" } ]

2009-11-11T00:00:00

[ [ "Babichev", "E.", "" ], [ "Kachelriess", "M.", "" ] ]

1410.7099

Valery A. Lunts

Michael Larsen and Valery A. Lunts

Rationality of motivic zeta function and cut-and-paste problem

Comments and welcome

null

math.AG

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Assuming the positive solution to the Cut-and-paste problem we prove that the motivic zeta function remains irrational after inverting L.

[ { "version": "v1", "created": "Sun, 26 Oct 2014 23:51:08 GMT" } ]

2014-10-28T00:00:00

[ [ "Larsen", "Michael", "" ], [ "Lunts", "Valery A.", "" ] ]

1403.4348

Mathieu Huruguen

Mathieu Huruguen (UBC)

Special reductive groups over an arbitrary field

21 pages. Comments welcome

null

math.AG

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

A linear algebraic group G defined over a field k is called special if every G-torsor over every field extension of k is trivial. In 1958 Grothendieck classified special groups in the case where the base field is algebraically closed. In this paper we describe the derived subgroup and the coradical of a special reductive group over an arbitrary field k. We also classify special semisimple groups, special reductive groups of inner type and special quasisplit reductive groups over an arbitrary field k.

[ { "version": "v1", "created": "Tue, 18 Mar 2014 05:27:55 GMT" } ]

2014-03-19T00:00:00

[ [ "Huruguen", "Mathieu", "", "UBC" ] ]

2311.03878

Andrej Vilfan

Abdallah Daddi-Moussa-Ider, Ramin Golestanian and Andrej Vilfan

Hydrodynamic efficiency limit on a Marangoni surfer

17 pages, 5 figures

J. Fluid Mech. 986 (2024) A32

10.1017/jfm.2024.363

null

physics.flu-dyn cond-mat.soft

http://creativecommons.org/licenses/by/4.0/

A Marangoni surfer is an object embedded in a gas-liquid interface, propelled by gradients in surface tension. We derive an analytical theorem for the lower bound on the viscous dissipation by a Marangoni surfer in the limit of small Reynolds and capillary numbers. The minimum dissipation can be expressed with the reciprocal difference between drag coefficients of two passive bodies of the same shape as the Marangoni surfer, one in a force-free interface and the other in an interface with surface incompressibility. The distribution of surface tension that gives the optimal propulsion is given by the surface tension of the solution for the incompressible surface and the flow is a superposition of both solutions. For a surfer taking the form of a thin circular disk, the minimum dissipation is $16\mu a V^2$, giving a Lighthill efficiency of $1/3$. This places the Marangoni surfers among the hydrodynamically most efficient microswimmers.

[ { "version": "v1", "created": "Tue, 7 Nov 2023 10:51:26 GMT" }, { "version": "v2", "created": "Tue, 13 Feb 2024 12:25:06 GMT" } ]

2024-05-15T00:00:00

[ [ "Daddi-Moussa-Ider", "Abdallah", "" ], [ "Golestanian", "Ramin", "" ], [ "Vilfan", "Andrej", "" ] ]

cond-mat/0512286

Masayuki Hase Oka

M. O. Hase and S. R. Salinas

Dynamics of a mean spherical model with competing interactions

null

J. Phys. A 39, 4875 (2006)

10.1088/0305-4470/39/18/007

null

cond-mat.soft

null

The Langevin dynamics of a $d$-dimensional mean spherical model with competing interactions along $m\leq d$ directions of a hypercubic lattice is analysed. After a quench at high temperatures, the dynamical behaviour is characterized by two distinct time scales associated with stationary and aging regimes. The asymptotic expressions for the autocorrelation and response functions, in supercritical, critical, and subcritical cases, were calculated. Aging effects, which are known to be present in the ferromagnetic version of this model system, are not affected by the introduction of competing interactions.

[ { "version": "v1", "created": "Tue, 13 Dec 2005 22:19:24 GMT" }, { "version": "v2", "created": "Fri, 24 Mar 2006 16:00:52 GMT" }, { "version": "v3", "created": "Thu, 20 Apr 2006 18:19:43 GMT" } ]

2009-11-11T00:00:00

[ [ "Hase", "M. O.", "" ], [ "Salinas", "S. R.", "" ] ]

2404.01213

Weijun Zhang

Jing Gao and Weijun Zhang and Zhitao Zhang

Bifurcation on Fully Nonlinear Elliptic Equations and Systems

comments are welcome!

null

math.AP math.FA

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

In this paper, we study the following fully nonlinear elliptic equations \begin{equation*} \left\{\begin{array}{rl} \left(S_{k}(D^{2}u)\right)^{\frac1k}=\lambda f(-u) & in\quad\Omega \\ u=0 & on\quad \partial\Omega\\ \end{array} \right. \end{equation*} and coupled systems \begin{equation*} \left\{\begin{array}{rl} (S_{k}(D^{2}u))^\frac1k=\lambda g(-u,-v) & in\quad\Omega \\ (S_{k}(D^{2}v))^\frac1k=\lambda h(-u,-v) & in\quad\Omega \\ u=v=0 & on\quad \partial\Omega\\ \end{array} \right. \end{equation*} dominated by $k$-Hessian operators, where $\Omega$ is a $(k$-$1)$-convex bounded domain in $\mathbb{R}^{N}$, $\lambda$ is a non-negative parameter, $f:\left[0,+\infty\right)\rightarrow\left[0,+\infty\right)$ is a continuous function with zeros only at $0$ and $g,h:\left[0,+\infty\right)\times \left[0,+\infty\right)\rightarrow \left[0,+\infty\right)$ are continuous functions with zeros only at $(\cdot,0)$ and $(0,\cdot)$. We determine the interval of $\lambda$ about the existence, non-existence, uniqueness and multiplicity of $k$-convex solutions to the above problems according to various cases of $f,g,h$, which is a complete supplement to the known results in previous literature. In particular, the above results are also new for Laplacian and Monge-Amp\`ere operators. We mainly use bifurcation theory, a-priori estimates, various maximum principles and technical strategies in the proof.

[ { "version": "v1", "created": "Mon, 1 Apr 2024 16:12:56 GMT" } ]

2024-04-02T00:00:00

[ [ "Gao", "Jing", "" ], [ "Zhang", "Weijun", "" ], [ "Zhang", "Zhitao", "" ] ]

1410.7453

Cody Hyndman

Cody B. Hyndman and Menachem Wenger

GMWB Riders in a Binomial Framework - Pricing, Hedging, and Diversification of Mortality Risk

41 pages, 11 figures; This paper combines a previous version titled "Pricing and Hedging GMWB Riders in a Binomial Framework" (arXiv:1410.7453v1) and the working paper titled "Diversification of mortality risk in GMWB rider pricing and hedging"

null

q-fin.PR q-fin.CP

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

We construct a binomial model for a guaranteed minimum withdrawal benefit (GMWB) rider to a variable annuity (VA) under optimal policyholder behaviour. The binomial model results in explicitly formulated perfect hedging strategies funded using only periodic fee income. We consider the separate perspectives of the insurer and policyholder and introduce a unifying relationship. Decompositions of the VA and GMWB contract into term-certain payments and options representing the guarantee and early surrender features are extended to the binomial framework. We incorporate an approximation algorithm for Asian options that significantly improves efficiency of the binomial model while retaining accuracy. Several numerical examples are provided which illustrate both the accuracy and the tractability of the binomial model. We extend the binomial model to include policy holder mortality and death benefits. Pricing, hedging, and the decompositions of the contract are extended to incorporate mortality risk. We prove limiting results for the hedging strategies and demonstrate mortality risk diversification. Numerical examples are provided which illustrate the effectiveness of hedging and the diversification of mortality risk under capacity constraints with finite pools.

[ { "version": "v1", "created": "Mon, 27 Oct 2014 22:42:48 GMT" }, { "version": "v2", "created": "Wed, 6 Jul 2016 16:30:53 GMT" } ]

2016-07-07T00:00:00

[ [ "Hyndman", "Cody B.", "" ], [ "Wenger", "Menachem", "" ] ]

2207.05555

Changjian Fu

Changjian Fu, Shengfei Geng, Pin Liu

Exchange graphs of cluster algebras have the non-leaving-face property

null

Bulletin London Math. Soc. (2023), 55, 2062-2069

10.1112/blms.12836

null

math.RA math.CO

http://creativecommons.org/licenses/by-nc-nd/4.0/

The claim in the title is proved.

[ { "version": "v1", "created": "Sat, 9 Jul 2022 02:14:38 GMT" } ]

2024-02-15T00:00:00

[ [ "Fu", "Changjian", "" ], [ "Geng", "Shengfei", "" ], [ "Liu", "Pin", "" ] ]

1707.05340

Meng Wang

Meng Wang, Jiaheng Zhang, Jun Liu, Wei Hu, Sen Wang, Xue Li, Wenqiang Liu

PDD Graph: Bridging Electronic Medical Records and Biomedical Knowledge Graphs via Entity Linking

9 pages,5 figures,accepted by ISWC 2017

null

cs.DB cs.AI cs.IR

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Electronic medical records contain multi-format electronic medical data that consist of an abundance of medical knowledge. Facing with patient's symptoms, experienced caregivers make right medical decisions based on their professional knowledge that accurately grasps relationships between symptoms, diagnosis and corresponding treatments. In this paper, we aim to capture these relationships by constructing a large and high-quality heterogenous graph linking patients, diseases, and drugs (PDD) in EMRs. Specifically, we propose a novel framework to extract important medical entities from MIMIC-III (Medical Information Mart for Intensive Care III) and automatically link them with the existing biomedical knowledge graphs, including ICD-9 ontology and DrugBank. The PDD graph presented in this paper is accessible on the Web via the SPARQL endpoint, and provides a pathway for medical discovery and applications, such as effective treatment recommendations.

[ { "version": "v1", "created": "Mon, 17 Jul 2017 18:04:27 GMT" }, { "version": "v2", "created": "Mon, 24 Jul 2017 14:36:18 GMT" } ]

2017-07-25T00:00:00

[ [ "Wang", "Meng", "" ], [ "Zhang", "Jiaheng", "" ], [ "Liu", "Jun", "" ], [ "Hu", "Wei", "" ], [ "Wang", "Sen", "" ], [ "Li", "Xue", "" ], [ "Liu", "Wenqiang", "" ] ]

1704.06600

Casimir Ehrenborg

Casimir Ehrenborg and Mats Gustafsson

Fundamental bounds on MIMO antennas

null

IEEE Antennas and Wireless Propagation Letters 17 (1), 21-24, 2018

10.1109/LAWP.2017.2772032

null

physics.class-ph math.OC physics.app-ph

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Antenna current optimization is often used to analyze the optimal performance of antennas. Antenna performance can be quantified in e.g., minimum Q-factor and efficiency. The performance of MIMO antennas is more involved and, in general, a single parameter is not sufficient to quantify it. Here, the capacity of an idealized channel is used as the main performance quantity. An optimization problem in the current distribution for optimal capacity, measured in spectral efficiency, given a fixed Q-factor and efficiency is formulated as a semi-definite optimization problem. A model order reduction based on characteristic and energy modes is employed to improve the computational efficiency. The performance bound is illustrated by solving the optimization problem numerically for rectangular plates and spherical shells.

[ { "version": "v1", "created": "Thu, 13 Apr 2017 12:07:02 GMT" }, { "version": "v2", "created": "Wed, 03 May 2017 09:23:46 GMT" }, { "version": "v3", "created": "Tue, 15 Aug 2017 11:59:37 GMT" }, { "version": "v4", "created": "Wed, 24 Jul 2019 09:30:45 GMT" } ]

2025-09-23T00:00:00

[ [ "Ehrenborg", "Casimir", "" ], [ "Gustafsson", "Mats", "" ] ]

1308.1754

Chanda Jog Dr.

Chanda J. Jog

Q criterion for disc stability modified by external tidal field

7 pages, 3 figures, submitted to MNRAS

null

astro-ph.GA astro-ph.CO

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

The standard Q criterion (with Q > 1) describes the local stability of a disc supported by rotation and random motion. Most astrophysical discs, however, are under the influence of an external gravitational field which can affect their stability. A typical example is a galactic disc embedded in a dark matter halo. Here we do a linear perturbation analysis for a disc in an external field, and obtain a generalized dispersion relation and a modified stability criterion. An external field has two effects on the disc dynamics: first, it contributes to the unperturbed rotational field, and second, it adds a tidal field term in the stability parameter. A typical disruptive tidal field results in a higher modified Q value and hence leads to a more stable disc. We apply these results to the Milky Way, and to a low surface brightness galaxy UGC 7321. We find that in each case the stellar disc by itself is barely stable and it is the dark matter halo that stabilizes the disc against local, axisymmetric gravitational instabilities. This result has been largely missed so far because in practice the value for Q for a galactic disc is obtained in a hybrid fashion using the observed rotational field that is set by both the disc and the halo, and hence is higher than for a pure disc.

[ { "version": "v1", "created": "Thu, 8 Aug 2013 04:33:21 GMT" } ]

2013-08-09T00:00:00

[ [ "Jog", "Chanda J.", "" ] ]

2402.11562

Jian Zhu

Wei Ding, Rui Zhang, Tianning Chen, Shuai Qu, Dewen Yu, Liwei Dong, Jian Zhu, Yaowen Yang, Badreddine Assouar

Origin and Customization of Bandgap in Chiral Phononic Crystals

7 pages, 4 figures

null

physics.app-ph

http://creativecommons.org/licenses/by/4.0/

The wave equation governing the wave propagation in chiral phononic crystals, established through force equilibrium law, conceals the underlying physical information. This has led to a controversy over the bandgap mechanism. In this letter, we theoretically unveil the reason of this controversy, and put forward an alternative approach from wave behavior to formulate the wave equation, offering a new pathway to articulate the bandgap physics directly. We identify the obstacles in coupled acoustic and optic branches to widen and lower the bandgap, and introduce an approach based on spherical hinges to decrease the barriers, for customizing the bandgap frequency and width. Finally, we validate our proposal through numerical simulation and experimental demonstration.

[ { "version": "v1", "created": "Sun, 18 Feb 2024 12:13:05 GMT" } ]

2024-02-20T00:00:00

[ [ "Ding", "Wei", "" ], [ "Zhang", "Rui", "" ], [ "Chen", "Tianning", "" ], [ "Qu", "Shuai", "" ], [ "Yu", "Dewen", "" ], [ "Dong", "Liwei", "" ], [ "Zhu", "Jian", "" ], [ "Yang", "Yaowen", "" ], [ "Assouar", "Badreddine", "" ] ]

2310.19658

Noah Ziems

Noah Ziems, Gang Liu, John Flanagan, Meng Jiang

Explaining Tree Model Decisions in Natural Language for Network Intrusion Detection

Accepted to NeurIPS XAIA Workshop 2023

null

cs.CL cs.AI

http://creativecommons.org/licenses/by/4.0/

Network intrusion detection (NID) systems which leverage machine learning have been shown to have strong performance in practice when used to detect malicious network traffic. Decision trees in particular offer a strong balance between performance and simplicity, but require users of NID systems to have background knowledge in machine learning to interpret. In addition, they are unable to provide additional outside information as to why certain features may be important for classification. In this work, we explore the use of large language models (LLMs) to provide explanations and additional background knowledge for decision tree NID systems. Further, we introduce a new human evaluation framework for decision tree explanations, which leverages automatically generated quiz questions that measure human evaluators' understanding of decision tree inference. Finally, we show LLM generated decision tree explanations correlate highly with human ratings of readability, quality, and use of background knowledge while simultaneously providing better understanding of decision boundaries.

[ { "version": "v1", "created": "Mon, 30 Oct 2023 15:40:34 GMT" } ]

2023-10-31T00:00:00

[ [ "Ziems", "Noah", "" ], [ "Liu", "Gang", "" ], [ "Flanagan", "John", "" ], [ "Jiang", "Meng", "" ] ]

1307.2300

Sergei Yurchenko

Emma J. Barton, Sergei N. Yurchenko and Jonathan Tennyson

ExoMol line lists II: The ro-vibrational spectrum of SiO

MNRAS (in press)

MNRAS 434, 1469-1475 (2013)

10.1093/mnras/stt1105

null

astro-ph.SR physics.chem-ph

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Accurate rotation-vibration line lists are calculated for silicon monoxide. Line lists are presented for the main isotopologue, $^{28}$Si$^{16}$O, and for four monosubsituted isotopologues ($^{29}$Si$^{16}$O, $^{30}$Si$^{16}$O, $^{28}$Si$^{18}$O and $^{28}$Si$^{17}$O), in their ground electronic states. These line lists are suitable for high temperatures (up to 9000 K) including those relevant to exoplanetary atmospheres and cool stars. A combination of empirical and \textit{ab initio} methods is used: the potential energy curves are determined to high accuracy by fitting to extensive data from the analysis of both laboratory and sunspot spectra; a high quality {\it ab initio} dipole moment curve is calculated at the large basis set, multi-reference configuration interaction level. A partition function plus full line lists of rotation-vibration transitions are made available in an electronic form as supplementary data to this article and at \url{www.exomol.com}.

[ { "version": "v1", "created": "Mon, 8 Jul 2013 23:10:38 GMT" } ]

2013-09-27T00:00:00

[ [ "Barton", "Emma J.", "" ], [ "Yurchenko", "Sergei N.", "" ], [ "Tennyson", "Jonathan", "" ] ]

1406.4619

Alexandre Chotard

Alexandre Chotard (INRIA Saclay - Ile de France, LRI), Martin Holena

A Generalized Markov-Chain Modelling Approach to $(1,\lambda)$-ES Linear Optimization: Technical Report

null

cs.NA cs.LG cs.NE

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Several recent publications investigated Markov-chain modelling of linear optimization by a $(1,\lambda)$-ES, considering both unconstrained and linearly constrained optimization, and both constant and varying step size. All of them assume normality of the involved random steps, and while this is consistent with a black-box scenario, information on the function to be optimized (e.g. separability) may be exploited by the use of another distribution. The objective of our contribution is to complement previous studies realized with normal steps, and to give sufficient conditions on the distribution of the random steps for the success of a constant step-size $(1,\lambda)$-ES on the simple problem of a linear function with a linear constraint. The decomposition of a multidimensional distribution into its marginals and the copula combining them is applied to the new distributional assumptions, particular attention being paid to distributions with Archimedean copulas.

[ { "version": "v1", "created": "Wed, 18 Jun 2014 06:58:38 GMT" } ]

2014-06-19T00:00:00

[ [ "Chotard", "Alexandre", "", "INRIA Saclay - Ile de France, LRI" ], [ "Holena", "Martin", "" ] ]

1707.07301

Xi Li

Shanshan Zhao, Xi Li and Omar El Farouk Bourahla

Deep Optical Flow Estimation Via Multi-Scale Correspondence Structure Learning

7 pages, 3 figures, 2 tables

null

cs.CV

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

As an important and challenging problem in computer vision, learning based optical flow estimation aims to discover the intrinsic correspondence structure between two adjacent video frames through statistical learning. Therefore, a key issue to solve in this area is how to effectively model the multi-scale correspondence structure properties in an adaptive end-to-end learning fashion. Motivated by this observation, we propose an end-to-end multi-scale correspondence structure learning (MSCSL) approach for optical flow estimation. In principle, the proposed MSCSL approach is capable of effectively capturing the multi-scale inter-image-correlation correspondence structures within a multi-level feature space from deep learning. Moreover, the proposed MSCSL approach builds a spatial Conv-GRU neural network model to adaptively model the intrinsic dependency relationships among these multi-scale correspondence structures. Finally, the above procedures for correspondence structure learning and multi-scale dependency modeling are implemented in a unified end-to-end deep learning framework. Experimental results on several benchmark datasets demonstrate the effectiveness of the proposed approach.

[ { "version": "v1", "created": "Sun, 23 Jul 2017 14:08:54 GMT" } ]

2017-07-25T00:00:00

[ [ "Zhao", "Shanshan", "" ], [ "Li", "Xi", "" ], [ "Bourahla", "Omar El Farouk", "" ] ]

2204.00849

Weizhe Lin

Weizhe Lin, Linjun Shou, Ming Gong, Pei Jian, Zhilin Wang, Bill Byrne, Daxin Jiang

Transformer-Empowered Content-Aware Collaborative Filtering

null

cs.IR

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Knowledge graph (KG) based Collaborative Filtering is an effective approach to personalizing recommendation systems for relatively static domains such as movies and books, by leveraging structured information from KG to enrich both item and user representations. Motivated by the use of Transformers for understanding rich text in content-based filtering recommender systems, we propose Content-aware KG-enhanced Meta-preference Networks as a way to enhance collaborative filtering recommendation based on both structured information from KG as well as unstructured content features based on Transformer-empowered content-based filtering. To achieve this, we employ a novel training scheme, Cross-System Contrastive Learning, to address the inconsistency of the two very different systems and propose a powerful collaborative filtering model and a variant of the well-known NRMS system within this modeling framework. We also contribute to public domain resources through the creation of a large-scale movie-knowledge-graph dataset and an extension of the already public Amazon-Book dataset through incorporation of text descriptions crawled from external sources. We present experimental results showing that enhancing collaborative filtering with Transformer-based features derived from content-based filtering outperforms strong baseline systems, improving the ability of knowledge-graph-based collaborative filtering systems to exploit item content information.

[ { "version": "v1", "created": "Sat, 2 Apr 2022 12:33:23 GMT" } ]

2022-04-05T00:00:00

[ [ "Lin", "Weizhe", "" ], [ "Shou", "Linjun", "" ], [ "Gong", "Ming", "" ], [ "Jian", "Pei", "" ], [ "Wang", "Zhilin", "" ], [ "Byrne", "Bill", "" ], [ "Jiang", "Daxin", "" ] ]

2507.15571

Matheus Filipe Santos Alves

Matheus F. S. Alves, L.G. Medeiros, Davi C. Rodrigues

Gravitational waveforms from inspiraling compact binaries in quadratic gravity and their parameterized post-Einstein characterization

10 pages

null

gr-qc

http://creativecommons.org/licenses/by/4.0/

We investigate gravitational waveforms from the inspiral phase of compact binary systems within the framework of quadratic gravity and map their deviations from general relativity into the parameterized post-Einstein (PPE) formalism to constrain the theory parameters. Quadratic gravity generically includes a massive spin-2 ghost, which leads to ill-defined energy and angular momentum fluxes. Following earlier proposals, we remove these unphysical features by imposing a constraint on the massive spin-2 mode, restricting it to propagate only the same polarizations of general relativity. Within the quadrupole approximation, we derive the radiative degrees of freedom, including massless and massive tensor modes, as well as a massive scalar field. Using the stationary phase approximation, we compute the Fourier-domain waveform of the massless tensor modes and extract the phase corrections. For small deviations from general relativity, we show that both the scalar and massive tensor modes can be consistently embedded into the PPE framework, extending previous results that considered only scalar fields. We derive updated constraints on the parameters of quadratic gravity, finding bounds improved by three orders of magnitude compared to existing limits. Finally, we present forecasts for the sensitivity of the Einstein Telescope to these deviations.

[ { "version": "v1", "created": "Mon, 21 Jul 2025 12:52:31 GMT" } ]

2025-07-22T00:00:00

[ [ "Alves", "Matheus F. S.", "" ], [ "Medeiros", "L. G.", "" ], [ "Rodrigues", "Davi C.", "" ] ]

2504.12189

Kiljae Lee

Kiljae Lee, Yuan Zhang

Leave-One-Out Stable Conformal Prediction

Accepted at ICLR 2025

null

stat.ML cs.LG

http://creativecommons.org/licenses/by/4.0/

Conformal prediction (CP) is an important tool for distribution-free predictive uncertainty quantification. Yet, a major challenge is to balance computational efficiency and prediction accuracy, particularly for multiple predictions. We propose Leave-One-Out Stable Conformal Prediction (LOO-StabCP), a novel method to speed up full conformal using algorithmic stability without sample splitting. By leveraging leave-one-out stability, our method is much faster in handling a large number of prediction requests compared to existing method RO-StabCP based on replace-one stability. We derived stability bounds for several popular machine learning tools: regularized loss minimization (RLM) and stochastic gradient descent (SGD), as well as kernel method, neural networks and bagging. Our method is theoretically justified and demonstrates superior numerical performance on synthetic and real-world data. We applied our method to a screening problem, where its effective exploitation of training data led to improved test power compared to state-of-the-art method based on split conformal.

[ { "version": "v1", "created": "Wed, 16 Apr 2025 15:44:24 GMT" } ]

2025-04-17T00:00:00

[ [ "Lee", "Kiljae", "" ], [ "Zhang", "Yuan", "" ] ]

1211.1384

Michael Knap

Michael Knap, Enrico Arrigoni, Wolfgang von der Linden

Vibration-mediated correlation effects in the transport properties of a benzene molecule

6 pages, 3 figures

Phys. Rev. B 88, 054301 (2013)

10.1103/PhysRevB.88.054301

null

cond-mat.mes-hall cond-mat.str-el

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

We theoretically analyze correlation effects on the transport properties of a benzene molecule that are mediated by interactions between the motion of the nuclei and the transmitted charge. We focus on the lowest-lying molecular vibrational mode which allows us to derive an analytic expression for the current. The results provide transparent interpretations of various features of the highly nonlinear current-voltage characteristics, which is experimentally accessible through resonant inelastic electron-tunneling spectroscopy.

[ { "version": "v1", "created": "Tue, 6 Nov 2012 21:00:03 GMT" }, { "version": "v2", "created": "Wed, 7 Aug 2013 20:01:55 GMT" } ]

2013-08-09T00:00:00

[ [ "Knap", "Michael", "" ], [ "Arrigoni", "Enrico", "" ], [ "von der Linden", "Wolfgang", "" ] ]

2101.00951

Wasif Husain

Wasif Husain and Anthony W. Thomas

Significance of lower energy density region of neutron star and universalities among neutron star properties

6 pages, 10 figures, IOP conference paper

Journal of Physics: Conference Series 2019

10.1088/1742-6596/1643/1/012066

null

astro-ph.HE hep-th

http://creativecommons.org/publicdomain/zero/1.0/

We have constructed and compared models of rotating neutron stars and strange stars, within the Hartle framework. The significance of the low energy density region and crust region inside the neutron star has been studied, along with how much the existence of strange matter above the energy density 300 MeV/fm3 can affect the neutron star properties. We have confirmed several universalities among the neutron star properties such as, dimensionless moment of inertia vs dimensionless quadrupole moment, dimensionless tidal deformability vs dimensionless moment of inertia and moment of inertia parameters vs R/2M.

[ { "version": "v1", "created": "Sun, 27 Dec 2020 05:16:48 GMT" }, { "version": "v2", "created": "Tue, 8 Mar 2022 03:20:15 GMT" } ]

2022-03-09T00:00:00

[ [ "Husain", "Wasif", "" ], [ "Thomas", "Anthony W.", "" ] ]

2004.03625

Stephen Blundell

Franziska K. K. Kirschner, Daniel N. Woodruff, Matthew J. Bristow, Franz Lang, Peter J. Baker, Simon J. Clarke, and Stephen J. Blundell

Robustness of superconducting properties to transition metal substitution and impurity phases in Fe1-xVxSe

7 pages, 4 figures

Phys. Rev. B 100, 094527 (2019)

10.1103/PhysRevB.100.094527

null

cond-mat.supr-con

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

We have performed transverse- and zero-field muon spin rotation/relaxation experiments, as well as magnetometry measurements, on samples of Fe1-xVxSe and their Li+NH3 intercalates Li0.6(NH2)0.2(NH3)0.8 Fe1-x Vx Se. We examine the low vanadium substitution regime: x = 0.005, 0.01, and 0.02. The intercalation reaction significantly increases the critical temperature (Tc) and the superfluid stiffness for all x. The nonintercalated samples all exhibit Tc = 8.5 K while the intercalated samples all show an enhanced Tc > 40 K. Vanadium substitution has a negligible effect on Tc, but seems to suppress the superfluid stiffness for the nonintercalated samples and weakly enhance it for the intercalated materials. The optimal substitution level for the intercalated samples is found to be x = 0.01, with Tc = 41 K and {\lambda}_{ab}(0) = 0.18 {\mu}m. The nonintercalated samples can be modeled with either a single d-wave superconducting gap or with an anisotropic gap function based on recent quasiparticle imaging experiments, whereas the intercalates display multigap nodal behavior which can be fitted using s + d- or d + d-wave models. Magnetism, likely from iron impurities, appears after the intercalation reaction and coexists and competes with the superconductivity. However, it appears that the superconductivity is remarkably robust to the impurity phase, providing an avenue to stably improve the superconducting properties of transition metal substituted FeSe.

[ { "version": "v1", "created": "Tue, 7 Apr 2020 18:03:38 GMT" } ]

2020-04-09T00:00:00

[ [ "Kirschner", "Franziska K. K.", "" ], [ "Woodruff", "Daniel N.", "" ], [ "Bristow", "Matthew J.", "" ], [ "Lang", "Franz", "" ], [ "Baker", "Peter J.", "" ], [ "Clarke", "Simon J.", "" ], [ "Blundell", "Stephen J.", "" ] ]

2104.08816

Zahra Bagheri

E. Peyghan, Z. Bagheri, I. Gultekin and A. Gezer

Representations and Deformations of 3-Hom-$\rho$-Lie algebras

15 pages

null

math.RA math.AC

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

The aim of this paper is to introduce 3-Hom-$\rho$-Lie algebra structures generalizing the algebras of 3-Hom-Lie algebra. Also, we investigate the representations and deformations theory of this type of Hom-Lie algebras. Moreover, we introduce the definition of extensions and abelian extensions of 3-Hom-$\rho$-Lie algebras and show that associated to any abelian extension, there is a representation and a 2-cocycle.

[ { "version": "v1", "created": "Sun, 18 Apr 2021 11:14:02 GMT" }, { "version": "v2", "created": "Sat, 24 Apr 2021 17:37:12 GMT" } ]

2021-04-27T00:00:00

[ [ "Peyghan", "E.", "" ], [ "Bagheri", "Z.", "" ], [ "Gultekin", "I.", "" ], [ "Gezer", "A.", "" ] ]

1912.03746

Lucas Gren

A Flipped Classroom Approach to Teaching Empirical Software Engineering

IEEE Transactions on Education, Preprint December 8, 2019

null

10.1109/TE.2019.2960264

null

cs.SE

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Contribution: A flipped classroom approach to teaching empirical software engineering increases student learning by providing more time for active learning in class. Background: There is a need for longitudinal studies of the flipped classroom approach in general. Although a few cross-sectional studies show that a flipped classroom approach can increase student learning by providing more time for other in-class activities, such as active learning, such studies are also rare in the context of teaching software engineering. Intended outcomes: To assess the usefulness of a flipped classroom approach in teaching software engineering. Application design: The study was conducted at an international Master's program in Sweden, given in English, and partially replicated at a university in Africa. Findings: The results suggest that students' academic success, as measured by their exam grades, can be improved by introducing a flipped classroom to teach software engineering topics, but this may not extend to their subjective liking of the material, as measured by student evaluations. Furthermore, the effect of the change in teaching methodology was not replicated when changing the teaching team.

[ { "version": "v1", "created": "Sun, 8 Dec 2019 19:32:17 GMT" }, { "version": "v2", "created": "Sat, 14 Dec 2019 07:03:14 GMT" } ]

2020-01-13T00:00:00

[ [ "Gren", "Lucas", "" ] ]

1407.2110

William C Ray

William C. Ray, Samuel L. Wolock, Nicholas W Callahan, Min Dong, Q. Quinn Li, Chun Liang, Thomas J Magliery and Christopher W. Bartlett

Addressing the unmet need for visualizing Conditional Random Fields in Biological Data

BioVis 2014 conference

null

cs.GR q-bio.QM

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Background: The biological world is replete with phenomena that appear to be ideally modeled and analyzed by one archetypal statistical framework - the Graphical Probabilistic Model (GPM). The structure of GPMs is a uniquely good match for biological problems that range from aligning sequences to modeling the genome-to-phenome relationship. The fundamental questions that GPMs address involve making decisions based on a complex web of interacting factors. Unfortunately, while GPMs ideally fit many questions in biology, they are not an easy solution to apply. Building a GPM is not a simple task for an end user. Moreover, applying GPMs is also impeded by the insidious fact that the complex web of interacting factors inherent to a problem might be easy to define and also intractable to compute upon. Discussion: We propose that the visualization sciences can contribute to many domains of the bio-sciences, by developing tools to address archetypal representation and user interaction issues in GPMs, and in particular a variety of GPM called a Conditional Random Field(CRF). CRFs bring additional power, and additional complexity, because the CRF dependency network can be conditioned on the query data. Conclusions: In this manuscript we examine the shared features of several biological problems that are amenable to modeling with CRFs, highlight the challenges that existing visualization and visual analytics paradigms induce for these data, and document an experimental solution called StickWRLD which, while leaving room for improvement, has been successfully applied in several biological research projects.

[ { "version": "v1", "created": "Tue, 8 Jul 2014 14:34:14 GMT" } ]

2014-07-09T00:00:00

[ [ "Ray", "William C.", "" ], [ "Wolock", "Samuel L.", "" ], [ "Callahan", "Nicholas W", "" ], [ "Dong", "Min", "" ], [ "Li", "Q. Quinn", "" ], [ "Liang", "Chun", "" ], [ "Magliery", "Thomas J", "" ], [ "Bartlett", "Christopher W.", "" ] ]

1901.03307

Ali Ebrahimi

Ali Ebrahimi, Changyan He, Niravkumar Patel, Marin Kobilarov, Peter Gehlbach, Iulian Iordachita

Sclera Force Control in Robot-assisted Eye Surgery: Adaptive Force Control vs. Auditory Feedback

Conference paper accepted for International Symposium on Medical Robotics (ISMR) 2019, 7 pages (6 pages manuscript and 1 page reference), 7 figures, 1 table

null

cs.RO

http://creativecommons.org/licenses/by-nc-sa/4.0/

Surgeon hand tremor limits human capability during microsurgical procedures such as those that treat the eye. In contrast, elimination of hand tremor through the introduction of microsurgical robots diminishes the surgeon's tactile perception of useful and familiar tool-to-sclera forces. While the large mass and inertia of eye surgical robot prevents surgeon microtremor, loss of perception of small scleral forces may put the sclera at risk of injury. In this paper, we have applied and compared two different methods to assure the safety of sclera tissue during robot-assisted eye surgery. In the active control method, an adaptive force control strategy is implemented on the Steady-Hand Eye Robot in order to control the magnitude of scleral forces when they exceed safe boundaries. This autonomous force compensation is then compared to a passive force control method in which the surgeon performs manual adjustments in response to the provided audio feedback proportional to the magnitude of sclera force. A pilot study with three users indicate that the active control method is potentially more efficient.

[ { "version": "v1", "created": "Thu, 10 Jan 2019 18:22:59 GMT" } ]

2019-01-11T00:00:00

[ [ "Ebrahimi", "Ali", "" ], [ "He", "Changyan", "" ], [ "Patel", "Niravkumar", "" ], [ "Kobilarov", "Marin", "" ], [ "Gehlbach", "Peter", "" ], [ "Iordachita", "Iulian", "" ] ]

0804.1544

Maxim Chernodub

M. N. Chernodub, Ludvig Faddeev, Antti J. Niemi

Non-Abelian Supercurrents and de Sitter Ground State in Electroweak Theory

13 pages, no figures, JHEP style, published version

JHEP 0812:014,2008

10.1088/1126-6708/2008/12/014

UUITP-04/08, ITEP-LAT/2008-10

hep-th hep-lat hep-ph

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

We show that gauge symmetry breaking in the Weinberg-Salam model can be implemented by a mere change of variables and without any explicit gauge fixing. The change of variables entails the concept of supercurrent which has been widely employed in the study of superconductivity. It also introduces a separation between the isospin and the hypercharge, suggesting that our new variables describe a strongly coupled regime of the electroweak theory. We discuss the description of various embedded topological defects in terms of these variables. We also propose that in terms of our variables the Weinberg-Salam model can be interpreted in terms of a gravity theory with the modulus of Higgs field as dilaton and the de Sitter space as the ground state.

[ { "version": "v1", "created": "Wed, 9 Apr 2008 19:55:21 GMT" }, { "version": "v2", "created": "Tue, 2 Dec 2008 12:18:41 GMT" } ]

2009-01-01T00:00:00

[ [ "Chernodub", "M. N.", "" ], [ "Faddeev", "Ludvig", "" ], [ "Niemi", "Antti J.", "" ] ]

2508.12577

Takeshi Shinohara

Yoni Ishii and Takeshi Shinohara

Stirling polynomials and multiple zeta (star) functions at non-positive integers

19 pages

null

math.NT

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

It is known that the values of multiple zeta functions (MZFs) at non-positive integers can be expressed by Bernoulli numbers. This paper gives explicit formulas for the values of MZFs and multiple zeta star functions (MZSFs) at non-positive integers using Stirling polynomials. We also study the following two points: a connection between MZFs and MZSFs at non-positive integers and a connection between reverse values and generalized Gregory coefficients studied by Matsusaka, Murahara, and Onozuka.

[ { "version": "v1", "created": "Mon, 18 Aug 2025 02:28:21 GMT" } ]

2025-08-19T00:00:00

[ [ "Ishii", "Yoni", "" ], [ "Shinohara", "Takeshi", "" ] ]

2304.03156

Kshitij Agrawal

Sri Charan Kattamuru, Kshitij Agrawal, Shyam Prasad Adhikari, Abhishek Bose, Hemant Misra

Patch-wise Features for Blur Image Classification

Accepted in AIMLSystems2022

null

cs.CV

http://creativecommons.org/licenses/by-nc-sa/4.0/

Images captured through smartphone cameras often suffer from degradation, blur being one of the major ones, posing a challenge in processing these images for downstream tasks. In this paper we propose low-compute lightweight patch-wise features for image quality assessment. Using our method we can discriminate between blur vs sharp image degradation. To this end, we train a decision-tree based XGBoost model on various intuitive image features like gray level variance, first and second order gradients, texture features like local binary patterns. Experiments conducted on an open dataset show that the proposed low compute method results in 90.1% mean accuracy on the validation set, which is comparable to the accuracy of a compute-intensive VGG16 network with 94% mean accuracy fine-tuned to this task. To demonstrate the generalizability of our proposed features and model we test the model on BHBID dataset and an internal dataset where we attain accuracy of 98% and 91%, respectively. The proposed method is 10x faster than the VGG16 based model on CPU and scales linearly to the input image size making it suitable to be implemented on low compute edge devices.

[ { "version": "v1", "created": "Thu, 6 Apr 2023 15:39:11 GMT" } ]

2023-04-07T00:00:00

[ [ "Kattamuru", "Sri Charan", "" ], [ "Agrawal", "Kshitij", "" ], [ "Adhikari", "Shyam Prasad", "" ], [ "Bose", "Abhishek", "" ], [ "Misra", "Hemant", "" ] ]

1507.03445

Vladimir Braun M

V.M. Braun, A.N. Manashov, N. Offen

Evolution equation for the higher-twist B-meson distribution amplitude

Extended version, includes new results on the large momentum limit and a detailed study of the evolution effects in a simple model

Phys. Rev. D 92, 074044 (2015)

10.1103/PhysRevD.92.074044

DESY-15-108

hep-ph hep-th

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

We find that the evolution equation for the three-particle quark-gluon B-meson light-cone distribution amplitude (DA) of subleading twist is completely integrable in the large $N_c$ limit and can be solved exactly. The lowest anomalous dimension is separated from the remaining, continuous, spectrum by a finite gap. The corresponding eigenfunction coincides with the contribution of quark-gluon states to the two-particle DA $\phi_-(\omega)$ so that the evolution equation for the latter is the same as for the leading-twist DA $\phi_+(\omega)$ up to a constant shift in the anomalous dimension. Thus, ``genuine'' three-particle states that belong to the continuous spectrum effectively decouple from $\phi_-(\omega)$ to the leading-order accuracy. In turn, the scale dependence of the full three-particle DA turns out to be nontrivial so that the contribution with the lowest anomalous dimension does not become leading at any scale. The results are illustrated on a simple model that can be used in studies of $1/m_b$ corrections to heavy-meson decays in the framework of QCD factorization or light-cone sum rules.

[ { "version": "v1", "created": "Mon, 13 Jul 2015 13:25:08 GMT" }, { "version": "v2", "created": "Mon, 19 Oct 2015 15:26:40 GMT" } ]

2015-11-04T00:00:00

[ [ "Braun", "V. M.", "" ], [ "Manashov", "A. N.", "" ], [ "Offen", "N.", "" ] ]

cond-mat/0408386

Ravi Bhat

R. D. R. Bhat, P. Nemec, Y. Kerachian, H. M. van Driel, J. E. Sipe and Arthur L. Smirl

Two-photon spin injection in semiconductors

12 pages including 7 figures

Phys. Rev. B 71, 035209 (2005) (12 pages)

10.1103/PhysRevB.71.035209

null

cond-mat.other cond-mat.mes-hall

null

A comparison is made between the degree of spin polarization of electrons excited by one- and two-photon absorption of circularly polarized light in bulk zincblende semiconductors. Time- and polarization-resolved experiments in (001)-oriented GaAs reveal an initial degree of spin polarization of 49% for both one- and two-photon spin injection at wavelengths of 775 and 1550 nm, in agreement with theory. The macroscopic symmetry and microscopic theory for two-photon spin injection are reviewed, and the latter is generalized to account for spin-splitting of the bands. The degree of spin polarization of one- and two-photon optical orientation need not be equal, as shown by calculations of spectra for GaAs, InP, GaSb, InSb, and ZnSe using a 14x14 k.p Hamiltonian including remote band effects. By including the higher conduction bands in the calculation, cubic anisotropy and the role of allowed-allowed transitions can be investigated. The allowed-allowed transitions do not conserve angular momentum and can cause a high degree of spin polarization close to the band edge; a value of 78% is calculated in GaSb, but by varying the material parameters it could be as high as 100%. The selection rules for spin injection from allowed-allowed transitions are presented, and interband spin-orbit coupling is found to play an important role.

[ { "version": "v1", "created": "Tue, 17 Aug 2004 18:22:23 GMT" } ]

2007-05-23T00:00:00

[ [ "Bhat", "R. D. R.", "" ], [ "Nemec", "P.", "" ], [ "Kerachian", "Y.", "" ], [ "van Driel", "H. M.", "" ], [ "Sipe", "J. E.", "" ], [ "Smirl", "Arthur L.", "" ] ]

1207.5535

Rachel L. Ward

Rachel L. Ward, James Wadsley, Alison Sills, and Nicolas Petitclerc

Connecting the Dots: Analyzing Synthetic Observations of Star-Forming Clumps in Molecular Clouds

8 pages, 7 figures, Accepted for publication in the Astrophysical Journal

Astrophysical Journal 756, 119-125 (2012)

10.1088/0004-637X/756/2/119

null

astro-ph.GA

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

In this paper, we investigate the extent to which observations of molecular clouds can correctly identify and measure star-forming clumps. We produced a synthetic column density map and a synthetic spectral-line data cube from the simulated collapse of a 5000 M$_{\odot}$ molecular cloud. By correlating the clumps found in the simulation to those found in the synthetic observations, clump masses derived from spectral-line data cubes were found to be quite close to the true physical properties of the clumps. We also find that the `observed' clump mass function derived from the column density map is shifted by a factor of ~ 3 higher than the true clump mass function, due to projection of low-density material along the line of sight. Alves et al. (2007) first proposed that a shift of a clump mass function to higher masses by a factor of 3 can be attributed to a star formation efficiency of 30 %. Our results indicate that this finding may instead be due to an overestimate of clump masses determined from column density observations.

[ { "version": "v1", "created": "Mon, 23 Jul 2012 21:07:53 GMT" } ]

2012-08-23T00:00:00

[ [ "Ward", "Rachel L.", "" ], [ "Wadsley", "James", "" ], [ "Sills", "Alison", "" ], [ "Petitclerc", "Nicolas", "" ] ]

math/0703868

Lionel Levine

The Sandpile Group of a Tree

v2 incorporates referee comments, corrects references, improves notation

European Journal of Combinatorics 30(4): 1026--1035, 2009

10.1016/j.ejc.2008.02.014

null

math.CO

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

A wired tree is a graph obtained from a tree by collapsing the leaves to a single vertex. We describe a pair of short exact sequences relating the sandpile group of a wired tree to the sandpile groups of its principal subtrees. In the case of a regular tree these sequences split, enabling us to compute the full decomposition of the sandpile group as a product of cyclic groups. This resolves in the affirmative a conjecture of E. Toumpakari concerning the ranks of the Sylow p-subgroups.

[ { "version": "v1", "created": "Thu, 29 Mar 2007 07:09:27 GMT" }, { "version": "v2", "created": "Thu, 24 Jul 2008 17:01:11 GMT" } ]

2010-10-08T00:00:00

[ [ "Levine", "Lionel", "" ] ]

1206.5102

Stevenn Volant

Stevenn Volant, Caroline B\'erard, Marie-Laure Martin-Magniette and St\'ephane Robin

Hidden Markov Models with mixtures as emission distributions

null

stat.ML cs.LG stat.CO

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

In unsupervised classification, Hidden Markov Models (HMM) are used to account for a neighborhood structure between observations. The emission distributions are often supposed to belong to some parametric family. In this paper, a semiparametric modeling where the emission distributions are a mixture of parametric distributions is proposed to get a higher flexibility. We show that the classical EM algorithm can be adapted to infer the model parameters. For the initialisation step, starting from a large number of components, a hierarchical method to combine them into the hidden states is proposed. Three likelihood-based criteria to select the components to be combined are discussed. To estimate the number of hidden states, BIC-like criteria are derived. A simulation study is carried out both to determine the best combination between the merging criteria and the model selection criteria and to evaluate the accuracy of classification. The proposed method is also illustrated using a biological dataset from the model plant Arabidopsis thaliana. A R package HMMmix is freely available on the CRAN.

[ { "version": "v1", "created": "Fri, 22 Jun 2012 10:24:55 GMT" } ]

2012-06-25T00:00:00

[ [ "Volant", "Stevenn", "" ], [ "Bérard", "Caroline", "" ], [ "Martin-Magniette", "Marie-Laure", "" ], [ "Robin", "Stéphane", "" ] ]

1710.06268

Pierre-Henri Chavanis

Phase transitions between dilute and dense axion stars

null

Phys. Rev. D 98, 023009 (2018)

10.1103/PhysRevD.98.023009

null

gr-qc astro-ph.GA

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

We study the nature of phase transitions between dilute and dense axion stars interpreted as self-gravitating Bose-Einstein condensates. We develop a Newtonian model based on the Gross-Pitaevskii-Poisson equations for a complex scalar field with a self-interaction potential $V(|\psi|^2)$ involving an attractive $|\psi|^4$ term and a repulsive $|\psi|^6$ term. Using a Gaussian ansatz for the wave function, we analytically obtain the mass-radius relation of dilute and dense axion stars for arbitrary values of the self-interaction parameter $\lambda\le 0$. We show the existence of a critical point $|\lambda|_c\sim (m/M_P)^2$ above which a first order phase transition takes place. We qualitatively estimate general relativistic corrections on the mass-radius relation of axion stars. For weak self-interactions $|\lambda|<|\lambda|_c$, a system of self-gravitating axions forms a stable dilute axion star below a general relativistic maximum mass $M_{\rm max,GR}^{\rm dilute}\sim M_P^2/m$ and collapses into a black hole above that mass. For strong self-interactions $|\lambda|>|\lambda|_c$, a system of self-gravitating axions forms a stable dilute axion star below a Newtonian maximum mass $M_{\rm max,N}^{\rm dilute}=5.073 M_P/\sqrt{|\lambda|}$, collapses into a dense axion star above that mass, and collapses into a black hole above a general relativistic maximum mass $M_{\rm max,GR}^{\rm dense}\sim \sqrt{|\lambda|}M_P^3/m^2$. Dense axion stars explode below a Newtonian minimum mass $M_{\rm min,N}^{\rm dense}\sim m/\sqrt{|\lambda|}$ and form dilute axion stars of large size or disperse away. We determine the phase diagram of self-gravitating axions and show the existence of a triple point $(|\lambda|_*,M_*/(M_P^2/m))$ separating dilute axion stars, dense axion stars, and black holes. We make numerical applications for QCD axions and ultralight axions.

[ { "version": "v1", "created": "Tue, 10 Oct 2017 17:28:15 GMT" } ]

2018-07-18T00:00:00

[ [ "Chavanis", "Pierre-Henri", "" ] ]

quant-ph/0508212

Ulrich Mohrhoff

Comment on "Quantum Physics from A to Z"

A comment on quant-ph/0505187 v4, 8 pages, LaTeX

null

SAICE/HP050811

quant-ph

null

This is a comment on a collection of statements gathered on the occasion of the Quantum Physics of Nature meeting in Vienna.

[ { "version": "v1", "created": "Mon, 29 Aug 2005 04:30:52 GMT" } ]

2007-05-23T00:00:00

[ [ "Mohrhoff", "Ulrich", "" ] ]

1205.1180

Roman Shterenberg

Yulia Karpeshina, Roman Shterenberg

Extended States for Polyharmonic Operators with Quasi-periodic Potentials in Dimension Two

This is an announcement only. Text with the detailed proof is under preparation. 11 pages, 4 figures. arXiv admin note: text overlap with arXiv:math-ph/0601008, arXiv:0711.4404, arXiv:1008.4632

null

10.1063/1.4754832

null

math.SP

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

We consider a polyharmonic operator $H=(-\Delta)^l+V(\x)$ in dimension two with $l\geq 2$, $l$ being an integer, and a quasi-periodic potential $V(\x)$. We prove that the spectrum of $H$ contains a semiaxis and there is a family of generalized eigenfunctions at every point of this semiaxis with the following properties. First, the eigenfunctions are close to plane waves $e^{i< \k,\x>}$ at the high energy region. Second, the isoenergetic curves in the space of momenta $\k$ corresponding to these eigenfunctions have a form of slightly distorted circles with holes (Cantor type structure). A new method of multiscale analysis in the momentum space is developed to prove these results.

[ { "version": "v1", "created": "Sun, 6 May 2012 05:14:09 GMT" } ]

2015-06-05T00:00:00

[ [ "Karpeshina", "Yulia", "" ], [ "Shterenberg", "Roman", "" ] ]

1206.2838

Jean-Michel Alimi

Jean-Michel Alimi (1), Vincent Bouillot (1), Yann Rasera (1), Vincent Reverdy (1), Pier-Stefano Corasaniti (1), Irene Balmes (1), St\'ephane Requena (2), Xavier Delaruelle (3), Jean-Noel Richet (3) ((1) LUTh, www.deus-consortium.org, (2) GENCI, (3) TGCC)

DEUS Full Observable {\Lambda}CDM Universe Simulation: the numerical challenge

12 pages, 15 figures, paper submitted to the Supercomputing 2012 Conference (Salt Lake City, November 10-16, 2012)

null

astro-ph.CO physics.comp-ph

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

We have performed the first-ever numerical N- body simulation of the full observable universe (DEUS "Dark Energy Universe Simulation" FUR "Full Universe Run"). This has evolved 550 billion particles on an Adaptive Mesh Refinement grid with more than two trillion computing points along the entire evolutionary history of the universe and across 6 order of magnitudes length scales, from the size of the Milky Way to that of the whole observable universe. To date, this is the largest and most advanced cosmological simulation ever run. It provides unique information on the formation and evolution of the largest structure in the universe and an exceptional support to future observational programs dedicated to mapping the distribution of matter and galaxies in the universe. The simulation has run on 4752 (of 5040) thin nodes of BULL supercomputer CURIE, using more than 300 TB of memory for 10 million hours of computing time. About 50 PBytes of data were generated throughout the run. Using an advanced and innovative reduction workflow the amount of useful stored data has been reduced to 500 TBytes.

[ { "version": "v1", "created": "Wed, 13 Jun 2012 15:21:29 GMT" } ]

2012-06-14T00:00:00

[ [ "Alimi", "Jean-Michel", "" ], [ "Bouillot", "Vincent", "" ], [ "Rasera", "Yann", "" ], [ "Reverdy", "Vincent", "" ], [ "Corasaniti", "Pier-Stefano", "" ], [ "Balmes", "Irene", "" ], [ "Requena", "Stéphane", "" ], [ "Delaruelle", "Xavier", "" ], [ "Richet", "Jean-Noel", "" ] ]

2311.01691

Aashraya Jha

Finding Integral Points of Elliptic Curves over Imaginary Quadratic Fields

Updated version, to be published in Research in Number Theory as part of ANTS XVI proceedings

null

math.NT

http://creativecommons.org/licenses/by-nc-nd/4.0/

We determine the quadratic Chabauty set for integral points on elliptic curves of rank $2$ defined over imaginary quadratic fields using quadratic Chabauty. This builds on the work of Bianchi and Balakrishnan et al. We give the first instance of the implementation of anticyclotomic heights for curves which are not base changes, along with an implementation of a certain sieve for elliptic curves introduced by Balakrishnan et al. and used by Bianchi to determine integral points of rank $2$. We give the first example of the determination of the integral points of an elliptic curve of rank $2$ defined over an imaginary quadratic field, which is not a base change via quadratic Chabauty.

[ { "version": "v1", "created": "Fri, 3 Nov 2023 03:35:38 GMT" }, { "version": "v2", "created": "Wed, 4 Sep 2024 18:59:43 GMT" } ]

2024-09-06T00:00:00

[ [ "Jha", "Aashraya", "" ] ]

2505.12692

Ziwei Xu

Ziwei Xu, Udit Sanghi, Mohan Kankanhalli

Bullying the Machine: How Personas Increase LLM Vulnerability

null

cs.AI cs.CL

http://creativecommons.org/licenses/by-nc-sa/4.0/

Large Language Models (LLMs) are increasingly deployed in interactions where they are prompted to adopt personas. This paper investigates whether such persona conditioning affects model safety under bullying, an adversarial manipulation that applies psychological pressures in order to force the victim to comply to the attacker. We introduce a simulation framework in which an attacker LLM engages a victim LLM using psychologically grounded bullying tactics, while the victim adopts personas aligned with the Big Five personality traits. Experiments using multiple open-source LLMs and a wide range of adversarial goals reveal that certain persona configurations -- such as weakened agreeableness or conscientiousness -- significantly increase victim's susceptibility to unsafe outputs. Bullying tactics involving emotional or sarcastic manipulation, such as gaslighting and ridicule, are particularly effective. These findings suggest that persona-driven interaction introduces a novel vector for safety risks in LLMs and highlight the need for persona-aware safety evaluation and alignment strategies.

[ { "version": "v1", "created": "Mon, 19 May 2025 04:32:02 GMT" } ]

2025-05-20T00:00:00

[ [ "Xu", "Ziwei", "" ], [ "Sanghi", "Udit", "" ], [ "Kankanhalli", "Mohan", "" ] ]

2311.12069

Lorenzo Pieri Dr.

Lorenzo Pieri

Hyperwave: Hyper-Fast Communication within General Relativity

null

gr-qc hep-th

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Warp-drives are solutions of general relativity widely considered unphysical due to high negative energy requirements. While the majority of the literature has focused on macroscopic solutions towards the goal of interstellar travel, in this work we explore what happens in the small radius limit. In this regime the magnitude of the total negative energy requirements gets smaller than the energy contained in a lightning bolt, more than 70 orders of magnitude less than the original Alcubierre warp drive. Such an amount could conceivably be generated with current technology by scaling up Casimir-like apparatuses. We then describe a tubular distribution of externally-generated negative energy which addresses the major issues plaguing macroscopic warp-drives and propose a concrete mechanism to accelerate and decelerate a warp. A byproduct of warp deceleration is the emission of a ray of high-energy particles. The detection of such particles could be used as the backbone of a faster-than-light communication device, reminiscent of the hyperwave of science fiction, even though significant engineering challenges remain to achieve practical communication.

[ { "version": "v1", "created": "Sun, 19 Nov 2023 18:30:35 GMT" }, { "version": "v2", "created": "Thu, 16 May 2024 19:53:50 GMT" } ]

2024-05-20T00:00:00

[ [ "Pieri", "Lorenzo", "" ] ]

2501.07961

Manuel \'Ubeda-Flores

Fabrizio Durante, Juan Fern\'andez-S\'anchez, Manuel \'Ubeda-Flores

Extreme semilinear copulas

null

Fuzzy Sets and Systems, Volume 428 (2022), 121-137

10.1016/j.fss.2020.12.009

null

math.PR

http://creativecommons.org/licenses/by-nc-nd/4.0/

We study the extreme points (in the Krein-Milman sense) of the class of semilinear copulas and provide their characterization. Related results into the more general setting of conjunctive aggregation functions (i.e, semi--copulas and quasi--copulas) are also presented.

[ { "version": "v1", "created": "Tue, 14 Jan 2025 09:25:56 GMT" } ]

2025-01-15T00:00:00

[ [ "Durante", "Fabrizio", "" ], [ "Fernández-Sánchez", "Juan", "" ], [ "Úbeda-Flores", "Manuel", "" ] ]

1211.2125

Guido Gentile

Livia Corsi, Roberto Feola, Guido Gentile

Convergent series for quasi-periodically forced strongly dissipative systems

18 pages

Communications in Contemporary Mathematics 16 (2014), no. 3, 1350022, 20 pp

null

math.DS math.CA

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

We study the ordinary differential equation ${\varepsilon}\ddot x+\dot x + {\varepsilon} g(x) = {\varepsilon} f(\omega t)$, with $f$ and $g$ analytic and $f$ quasi-periodic in $t$ with frequency vector $\omega\in R^{d}$. We show that if there exists $c_0\in R$ such that $g(c_0)$ equals the average of $f$ and the first non-zero derivative of $g$ at $c_0$ is of odd order $n$, then, for ${\varepsilon}$ small enough and under very mild Diophantine conditions on $\omega$, there exists a quasi-periodic solution close to $c_0$, with the same frequency vector as $f$. In particular if $f$ is a trigonometric polynomial the Diophantine condition on $\omega$ can be completely removed. This extends results previously available in the literature for $n=1$. We also point out that, if $n=1$ and the first derivative of $g$ at $c_0$ is positive, then the quasi-periodic solution is locally unique and attractive.

[ { "version": "v1", "created": "Fri, 9 Nov 2012 13:34:05 GMT" } ]

2014-07-03T00:00:00

[ [ "Corsi", "Livia", "" ], [ "Feola", "Roberto", "" ], [ "Gentile", "Guido", "" ] ]

2011.07065

Homayoon Beigi

Amith Ananthram, Kailash Karthik Saravanakumar, Jessica Huynh, and Homayoon Beigi

Multi-Modal Emotion Detection with Transfer Learning

11 pages, 7 tables, 2 figures

null

RTI-20201113-01

eess.AS cs.CL cs.HC cs.LG

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Automated emotion detection in speech is a challenging task due to the complex interdependence between words and the manner in which they are spoken. It is made more difficult by the available datasets; their small size and incompatible labeling idiosyncrasies make it hard to build generalizable emotion detection systems. To address these two challenges, we present a multi-modal approach that first transfers learning from related tasks in speech and text to produce robust neural embeddings and then uses these embeddings to train a pLDA classifier that is able to adapt to previously unseen emotions and domains. We begin by training a multilayer TDNN on the task of speaker identification with the VoxCeleb corpora and then fine-tune it on the task of emotion identification with the Crema-D corpus. Using this network, we extract speech embeddings for Crema-D from each of its layers, generate and concatenate text embeddings for the accompanying transcripts using a fine-tuned BERT model and then train an LDA - pLDA classifier on the resulting dense representations. We exhaustively evaluate the predictive power of every component: the TDNN alone, speech embeddings from each of its layers alone, text embeddings alone and every combination thereof. Our best variant, trained on only VoxCeleb and Crema-D and evaluated on IEMOCAP, achieves an EER of 38.05%. Including a portion of IEMOCAP during training produces a 5-fold averaged EER of 25.72% (For comparison, 44.71% of the gold-label annotations include at least one annotator who disagrees).

[ { "version": "v1", "created": "Fri, 13 Nov 2020 18:58:59 GMT" } ]

2020-11-16T00:00:00

[ [ "Ananthram", "Amith", "" ], [ "Saravanakumar", "Kailash Karthik", "" ], [ "Huynh", "Jessica", "" ], [ "Beigi", "Homayoon", "" ] ]

hep-ph/0609128

Cheng-Wei Chiang

Cheng-Wei Chiang and Yu-Feng Zhou

Flavor SU(3) analysis of charmless B meson decays to two pseudoscalar mesons

22 pages and 2 figures; some comments and references added; more references added, version to appear in journal

JHEP 0612:027,2006

10.1088/1126-6708/2006/12/027

KEK TH-1103

hep-ph hep-ex

null

Global fits to charmless B --> PP decays in the framework of flavor SU(3) symmetry are updated and improved without reference to the \sin2\beta measured from the charmonium decay modes. Fit results directly constrain the (\bar\rho,\bar\eta) vertex of the unitarity triangle, and are used to predict the branching ratios and CP asymmetries of all decay modes, including those of the B_s system. Different schemes of SU(3) breaking in decay amplitude sizes are analyzed. The major breaking effect between strangeness-conserving and strangeness-changing decays can be accounted for by including a ratio of decay constants in tree and color-suppressed amplitudes. The possibility of having a new physics contribution to K \pi decays is also examined from the data fitting point of view.

[ { "version": "v1", "created": "Wed, 13 Sep 2006 14:31:13 GMT" }, { "version": "v2", "created": "Mon, 2 Oct 2006 07:24:37 GMT" }, { "version": "v3", "created": "Thu, 16 Nov 2006 08:55:59 GMT" } ]

2011-03-23T00:00:00

[ [ "Chiang", "Cheng-Wei", "" ], [ "Zhou", "Yu-Feng", "" ] ]

2306.17002

Feng Li

Feng Li, Jiayi Zhao, Huan Yang, Dongxiao Yu, Yuanfeng Zhou, Yiran Shen

VibHead: An Authentication Scheme for Smart Headsets through Vibration

null

cs.CR

http://creativecommons.org/licenses/by-nc-nd/4.0/

Recent years have witnessed the fast penetration of Virtual Reality (VR) and Augmented Reality (AR) systems into our daily life, the security and privacy issues of the VR/AR applications have been attracting considerable attention. Most VR/AR systems adopt head-mounted devices (i.e., smart headsets) to interact with users and the devices usually store the users' private data. Hence, authentication schemes are desired for the head-mounted devices. Traditional knowledge-based authentication schemes for general personal devices have been proved vulnerable to shoulder-surfing attacks, especially considering the headsets may block the sight of the users. Although the robustness of the knowledge-based authentication can be improved by designing complicated secret codes in virtual space, this approach induces a compromise of usability. Another choice is to leverage the users' biometrics; however, it either relies on highly advanced equipments which may not always be available in commercial headsets or introduce heavy cognitive load to users. In this paper, we propose a vibration-based authentication scheme, VibHead, for smart headsets. Since the propagation of vibration signals through human heads presents unique patterns for different individuals, VibHead employs a CNN-based model to classify registered legitimate users based the features extracted from the vibration signals. We also design a two-step authentication scheme where the above user classifiers are utilized to distinguish the legitimate user from illegitimate ones. We implement VibHead on a Microsoft HoloLens equipped with a linear motor and an IMU sensor which are commonly used in off-the-shelf personal smart devices. According to the results of our extensive experiments, with short vibration signals ($\leq 1s$), VibHead has an outstanding authentication accuracy; both FAR and FRR are around 5%.

[ { "version": "v1", "created": "Thu, 29 Jun 2023 15:00:32 GMT" } ]

2023-06-30T00:00:00

[ [ "Li", "Feng", "" ], [ "Zhao", "Jiayi", "" ], [ "Yang", "Huan", "" ], [ "Yu", "Dongxiao", "" ], [ "Zhou", "Yuanfeng", "" ], [ "Shen", "Yiran", "" ] ]

2510.06060

Christian Marinoni

Christian Marinoni and Riccardo Fosco Gramaccioni and Eleonora Grassucci and Danilo Comminiello

Controllable Audio-Visual Viewpoint Generation from 360{\deg} Spatial Information

null

cs.MM cs.AI cs.CV

http://creativecommons.org/licenses/by/4.0/

The generation of sounding videos has seen significant advancements with the advent of diffusion models. However, existing methods often lack the fine-grained control needed to generate viewpoint-specific content from larger, immersive 360-degree environments. This limitation restricts the creation of audio-visual experiences that are aware of off-camera events. To the best of our knowledge, this is the first work to introduce a framework for controllable audio-visual generation, addressing this unexplored gap. Specifically, we propose a diffusion model by introducing a set of powerful conditioning signals derived from the full 360-degree space: a panoramic saliency map to identify regions of interest, a bounding-box-aware signed distance map to define the target viewpoint, and a descriptive caption of the entire scene. By integrating these controls, our model generates spatially-aware viewpoint videos and audios that are coherently influenced by the broader, unseen environmental context, introducing a strong controllability that is essential for realistic and immersive audio-visual generation. We show audiovisual examples proving the effectiveness of our framework.

[ { "version": "v1", "created": "Tue, 07 Oct 2025 15:53:31 GMT" } ]

2025-10-08T00:00:00

[ [ "Marinoni", "Christian", "" ], [ "Gramaccioni", "Riccardo Fosco", "" ], [ "Grassucci", "Eleonora", "" ], [ "Comminiello", "Danilo", "" ] ]

1710.05937

Sergio Lerma-Hernandez

Sergio Lerma-Hern\'andez, Jorge Ch\'avez-Carlos, Miguel A. Bastarrachea-Magnani, Lea F. Santos, Jorge G. Hirsch

Analytical description of the survival probability of coherent states in regular regimes

23 pages, 9 figures

J. Phys. A: Math. Theor. 51, 475302 (2018)

10.1088/1751-8121/aae2c3

null

quant-ph cond-mat.other

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Using coherent states as initial states, we investigate the quantum dynamics of the Lipkin-Meshkov-Glick (LMG) and Dicke models in the semi-classical limit. They are representative models of bounded systems with one- and two-degrees of freedom, respectively. The first model is integrable, while the second one has both regular and chaotic regimes. Our analysis is based on the survival probability. Within the regular regime, the energy distribution of the initial coherent states consists of quasi-harmonic sub-sequences of energies with Gaussian weights. This allows for the derivation of analytical expressions that accurately describe the entire evolution of the survival probability, from $t=0$ to the saturation of the dynamics. The evolution shows decaying oscillations with a rate that depends on the anharmonicity of the spectrum and, in the case of the Dicke model, on interference terms coming from the simultaneous excitation of its two-degrees of freedom. As we move away from the regular regime, the complexity of the survival probability is shown to be closely connected with the properties of the corresponding classical phase space. Our approach has broad applicability, since its central assumptions are not particular of the studied models.

[ { "version": "v1", "created": "Mon, 16 Oct 2017 18:00:46 GMT" }, { "version": "v2", "created": "Wed, 30 Jan 2019 17:46:56 GMT" } ]

2019-01-31T00:00:00

[ [ "Lerma-Hernández", "Sergio", "" ], [ "Chávez-Carlos", "Jorge", "" ], [ "Bastarrachea-Magnani", "Miguel A.", "" ], [ "Santos", "Lea F.", "" ], [ "Hirsch", "Jorge G.", "" ] ]

1810.02168

Guillaume Jeanmairet

Guillaume Jeanmairet, Benjamin Rotenberg, Maximilien Levesque, Daniel Borgis and Mathieu Salanne

A Molecular Density Functional Theory Approach to Electron Transfer Reactions

30 pages, 10 figures, Chemical Science, 2019

null

10.1039/C8SC04512G

null

physics.chem-ph

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Beyond the dielectric continuum description initiated by Marcus theory, the nowadays standard theoretical approach to study electron transfer (ET) reactions in solution or at interfaces is to use classical force field or ab initio Molecular Dynamics simulations. We propose here an alternative method based on liquid-state theory, namely molecular density functional theory, which is numerically much more efficient than simulations while still retaining the molecular nature of the solvent. We begin by reformulating molecular ET theory in a density functional language and show how to compute the various observables characterizing ET reactions from an ensemble of density functional minimizations. In particular, we define in that formulation the relevant order parameter of the reaction, the so-called vertical energy gap, and determine the Marcus free energy curves of both reactant and product states along that coordinate. Important thermodynamic quantities such as the reaction free energy and the reorganization free energies follow. We assess the validity of the method by studying the model Cl$^0\rightarrow$ Cl$^+$ and Cl$^0\rightarrow$ Cl$^-$ ET reactions in bulk water for which molecular dynamics results are available. The anionic case is found to violate the standard Marcus theory. Finally, we take advantage of the computational efficiency of the method to study the influence of confinement on the ET, by investigating the evolution of the reorganization free energy of the Cl$^0\rightarrow$ Cl$^+$ reaction when the atom approaches an atomistically resolved wall.

[ { "version": "v1", "created": "Thu, 4 Oct 2018 12:18:53 GMT" }, { "version": "v2", "created": "Wed, 12 Dec 2018 08:51:19 GMT" } ]

2018-12-13T00:00:00

[ [ "Jeanmairet", "Guillaume", "" ], [ "Rotenberg", "Benjamin", "" ], [ "Levesque", "Maximilien", "" ], [ "Borgis", "Daniel", "" ], [ "Salanne", "Mathieu", "" ] ]

1203.0824

Fatemeh Taghavi Shahri

Z. Alizadeh Yazdi, A. Tahamtan, F. Taghavi-Shahri, F. Arash and M.E. Zomorrodian

Transverse Spin Structure Function g2(x, Q2 ) in the Valon model

21 pages, 19 figures

Phys. Rev. C 92, 015213 (2015)

10.1103/PhysRevC.92.015213

null

hep-ph

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

The spin dependent structure function, g2ww(x,Q^2), is calculated in the valon model. A simple approach is given for the determination of the twist-3 part of the g2(x, Q^2) in Mellin space; thus, enabling us to obtain the full transverse structure function, g2(x, Q^2) for proton, neutron and the deuteron. In light of the new data, we have further calculated the transversely polarized structure function of g23He(x, Q^2). Our results are checked against the experimental data and nice agreements are observed.

[ { "version": "v1", "created": "Mon, 5 Mar 2012 07:35:27 GMT" }, { "version": "v2", "created": "Wed, 12 Aug 2015 09:27:29 GMT" } ]

2015-08-13T00:00:00

[ [ "Yazdi", "Z. Alizadeh", "" ], [ "Tahamtan", "A.", "" ], [ "Taghavi-Shahri", "F.", "" ], [ "Arash", "F.", "" ], [ "Zomorrodian", "M. E.", "" ] ]

1508.04034

Hong-Hao Zhang

Chengfeng Cai, Ze-Min Huang, Zhaofeng Kang, Zhao-Huan Yu, Hong-Hao Zhang

Confronting the real scalar septuplet minimal dark matter model with vacuum stability, perturbativity, and Type-I and Type-III seesaws

This paper has been withdrawn by the authors due to a missing term in the potential in equation (10) and the resulting errors. Please see the new submission by the same authors today

null

hep-ph

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

We study a real scalar septuplet model which has a neutral component regarded as a dark matter particle candidate. The calculation of its thermal relic abundance without (with) the Sommerfeld effect suggests that the observed value corresponds to the mass of the dark matter particle $m_0 \gtrsim 8.8~(25)~\mathrm{TeV}$. Two extra quartic couplings $\lambda_2$ and $\lambda_3$ introduced in this model affect the running of other couplings, and hence the vacuum stability and the perturbativity up to the Planck scale. Therefore, the vacuum stability and the perturbativity conditions can constrain these couplings into a narrow region in the $\lambda_2$-$\lambda_3$ plane. Other constraints from $h\to\gamma\gamma$, electroweak oblique parameters, and direct and indirect DM searches are also investigated. Moreover, we survey the vacuum stability and the perturbativity in the model combining the septuplet with the Type-I or Type-III seesaw. The running of couplings is further altered when the energy scale goes above the seesaw scale. In the Type-I case, when the seesaw scale $\sim 10^{15}~\mathrm{GeV}$, the vacuum stability condition makes the acceptable region in the $\lambda_2$-$\lambda_3$ plane much narrower. In the Type-III case, if the seesaw scale is $\lesssim 52~\mathrm{TeV}$ or $\gtrsim 10^{15}~\mathrm{GeV}$, the acceptable region vanishes.

[ { "version": "v1", "created": "Mon, 17 Aug 2015 14:05:09 GMT" }, { "version": "v2", "created": "Wed, 19 Aug 2015 16:58:37 GMT" }, { "version": "v3", "created": "Tue, 6 Oct 2015 13:07:22 GMT" } ]

2015-10-07T00:00:00

[ [ "Cai", "Chengfeng", "" ], [ "Huang", "Ze-Min", "" ], [ "Kang", "Zhaofeng", "" ], [ "Yu", "Zhao-Huan", "" ], [ "Zhang", "Hong-Hao", "" ] ]

2303.16657

Dhaval Taunk

Dhaval Taunk and Vasudeva Varma

Summarizing Indian Languages using Multilingual Transformers based Models

null

Forum for Information Retrieval Evaluation, December 9-13, 2022, India

null

cs.CL

http://creativecommons.org/licenses/by-nc-sa/4.0/

With the advent of multilingual models like mBART, mT5, IndicBART etc., summarization in low resource Indian languages is getting a lot of attention now a days. But still the number of datasets is low in number. In this work, we (Team HakunaMatata) study how these multilingual models perform on the datasets which have Indian languages as source and target text while performing summarization. We experimented with IndicBART and mT5 models to perform the experiments and report the ROUGE-1, ROUGE-2, ROUGE-3 and ROUGE-4 scores as a performance metric.

[ { "version": "v1", "created": "Wed, 29 Mar 2023 13:05:17 GMT" } ]

2023-03-30T00:00:00

[ [ "Taunk", "Dhaval", "" ], [ "Varma", "Vasudeva", "" ] ]

2104.04294

Simon Wall

Ernest Pastor, David Moreno-Menc\'ia, Maurizio Monti, Allan S. Johnson, Nina Fleischmann, Cuixiang Wang, Youguo Shi, Xuerong Liu, Daniel G. Mazzone, Mark P.M. Dean, Simon Wall

Non-thermal breaking of magnetic order via photo-generated spin defects

null

Physical Review B 105, 064409 (2022)

10.1103/PhysRevB.105.064409

null

cond-mat.str-el

http://creativecommons.org/licenses/by/4.0/

In Mott insulators the evolution of antiferromagnetic order to superconducting or charge-density-wave-like states upon chemical doping underpins the control of quantum phases. Photo-doping can induce similar transitions on the ultrafast timescale, however the response of the spin system has remained elusive. Here, we use 4D-ultrafast optical spectroscopy to extract quantitative magnetic dynamics in the spin-orbit coupled Mott insulator Sr3Ir2O7. We demonstrate that light can non-thermally melt long-range spin order. At low fluences magnetic order recovers within 1 ps despite demagnetization of roughly 50%. However, high fluences induce a crossover to a long-lived demagnetized state without increasing the lattice temperature. We show that the generation of photo-induced spin defects enables a mechanism that stabilizes the demagnetized state which could help expose new transient phases.

[ { "version": "v1", "created": "Fri, 9 Apr 2021 10:42:08 GMT" }, { "version": "v2", "created": "Fri, 7 Jan 2022 14:31:24 GMT" } ]

2022-02-09T00:00:00

[ [ "Pastor", "Ernest", "" ], [ "Moreno-Mencía", "David", "" ], [ "Monti", "Maurizio", "" ], [ "Johnson", "Allan S.", "" ], [ "Fleischmann", "Nina", "" ], [ "Wang", "Cuixiang", "" ], [ "Shi", "Youguo", "" ], [ "Liu", "Xuerong", "" ], [ "Mazzone", "Daniel G.", "" ], [ "Dean", "Mark P. M.", "" ], [ "Wall", "Simon", "" ] ]

math/0008054

Fabio Pioli

L. Brambila Paz, E. Gomez Gonzalez, F. Pioli

On Picard bundles over Prym varieties

15 pages, Latex2e + amsart, xypic needed

null

math.AG

null

We study the birationality (onto its image) of the Abel-Prym morphism associated with a Prym-Tuyrin variety. We use such result to prove that Picard bundles over Prym varieties are simple and moreover they are stable when the Abel-Prym morphism is not birational. As a consequence we obtain that Picard bundles over moduli spaces of stable vector bundles with fixed determinant are simple. We prove that Picard bundles over moduli spaces of rank 2 vector bundles on curves of genus 2 bundles are stable.

[ { "version": "v1", "created": "Mon, 7 Aug 2000 11:44:33 GMT" } ]

2007-05-23T00:00:00

[ [ "Paz", "L. Brambila", "" ], [ "Gonzalez", "E. Gomez", "" ], [ "Pioli", "F.", "" ] ]

2310.17818

Sumit Mazumdar

R. Chesler, P. Bhattacharyya, A. Shukla and S. Mazumdar

Distinct contiguous versus separated triplet-pair multiexcitons in an intramolecular singlet fission chromophore

null

cond-mat.str-el

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

We show from many-body quantum mechanical calculations that there occur structurally distinct triplet-pair eigenstates in the intramolecular singlet fission (iSF) compound pentacene-tetracene-pentacene. Triplet excitons occupy neigboring pentacene and tetracene monomers in the higher energy doubly degenerate triplet-triplet multiexcitons, and terminal pentacene chromophores in the lower energy multiexciton. The lowest energy multiexciton is reached by ultrafast triplet migration within the triplet-triplet manifold, a result with profound implication for the design of superior iSF compounds.

[ { "version": "v1", "created": "Thu, 26 Oct 2023 23:44:11 GMT" } ]

2023-10-30T00:00:00

[ [ "Chesler", "R.", "" ], [ "Bhattacharyya", "P.", "" ], [ "Shukla", "A.", "" ], [ "Mazumdar", "S.", "" ] ]

math/0607308

Wouter Castryck

Wouter Castryck, Jan Denef, Frederik Vercauteren

Computing Zeta Functions of Nondegenerate Curves

41 pages

null

math.NT math.AG

null

In this paper we present a p-adic algorithm to compute the zeta function of a nondegenerate curve over a finite field using Monsky-Washnitzer cohomology. The paper vastly generalizes previous work since all known cases, e.g. hyperelliptic, superelliptic and C_{ab} curves, can be transformed to fit the nondegenerate case. For curves with a fixed Newton polytope, the property of being nondegenerate is generic, so that the algorithm works for almost all curves with given Newton polytope. For a genus g curve over F_{p^n}, the expected running time is O(n^3g^6 + n^2g^{6.5}), whereas the space complexity amounts to O(n^3g^4), assuming p is fixed.

[ { "version": "v1", "created": "Thu, 13 Jul 2006 13:18:56 GMT" }, { "version": "v2", "created": "Wed, 19 Jul 2006 12:52:49 GMT" }, { "version": "v3", "created": "Mon, 8 Jan 2007 16:13:57 GMT" } ]

2007-05-23T00:00:00

[ [ "Castryck", "Wouter", "" ], [ "Denef", "Jan", "" ], [ "Vercauteren", "Frederik", "" ] ]

1111.4833

Igor Goychuk

Igor Goychuk, Vasyl Kharchenko

Fractional Brownian motors and Stochastic Resonance

null

Phys. Rev. E 85, 051131 (2012)

10.1103/PhysRevE.85.051131

null

cond-mat.stat-mech

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

We study fluctuating tilt Brownian ratchets based on fractional subdiffusion in sticky viscoelastic media characterized by a power law memory kernel. Unlike the normal diffusion case the rectification effect vanishes in the adiabatically slow modulation limit and optimizes in a driving frequency range. It is shown also that anomalous rectification effect is maximal (stochastic resonance effect) at optimal temperature and can exhibit a surprisingly good quality. Moreover, subdiffusive current can flow in the counter-intuitive direction upon a change of temperature or driving frequency. The dependence of anomalous transport on load exhibits a remarkably simple universality.

[ { "version": "v1", "created": "Mon, 21 Nov 2011 11:22:27 GMT" } ]

2012-06-04T00:00:00

[ [ "Goychuk", "Igor", "" ], [ "Kharchenko", "Vasyl", "" ] ]

1807.09544

Ming-Hui Lu

Xiujuan Zhang, Meng Xiao, Ying Cheng, Ming-Hui Lu and Johan Christensen

Topological Sound

33 pages, 8 figures

Communications Physicsvolume 1, 97 (2018)

10.1038/s42005-018-0094-4

null

cond-mat.mes-hall

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Recently, we witnessed a tremendous effort to conquer the realm of acoustics as a possible playground to test with sound waves topologically protected wave propagation. Acoustics differ substantially from photonic and electronic systems since longitudinal sound waves lack intrinsic spin polarization and breaking the time-reversal symmetry requires additional complexities that both are essential in mimicking the quantum effects leading to topologically robust sound propagation. In this article, we review the latest efforts to explore with sound waves topological states of quantum matter in two- and three-dimensional systems where we discuss how spin and valley degrees of freedom appear as highly novel ingredients to tailor the flow of sound in the form of one-way edge modes and defect-immune protected acoustic waves. Both from a theoretical stand point and based on contemporary experimental verifications, we summarize the latest advancements of the flourishing research frontier on topological sound.

[ { "version": "v1", "created": "Wed, 25 Jul 2018 12:14:37 GMT" } ]

2019-05-14T00:00:00

[ [ "Zhang", "Xiujuan", "" ], [ "Xiao", "Meng", "" ], [ "Cheng", "Ying", "" ], [ "Lu", "Ming-Hui", "" ], [ "Christensen", "Johan", "" ] ]

1409.7237

Xiaolong Su

Lingyu Ma and Xiaolong Su

Remote transfer of Gaussian quantum discord

null

Opt. Express 22, 15894 (2014)

10.1364/OE.22.015894

null

quant-ph

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Quantum discord quantifies quantum correlation between quantum systems, which has potential application in quantum information processing. In this paper, we propose a scheme realizing the remote transfer of Gaussian quantum discord, in which another quantum discordant state or an Einstein-Podolsky-Rosen entangled state serves as ancillary state. The calculation shows that two independent optical modes that without direct interaction become quantum correlated after the transfer. The output Gaussian quantum discord can be higher than the initial Gaussian quantum discord when optimal gain of the classical channel and the ancillary state are chosen. The physical reason for this result comes from the fact that the quantum discord of an asymmetric Gaussian quantum discordant state can be higher than that of a symmetric one. The presented scheme has potential application in quantum information network.

[ { "version": "v1", "created": "Thu, 25 Sep 2014 12:46:26 GMT" } ]

2023-07-19T00:00:00

[ [ "Ma", "Lingyu", "" ], [ "Su", "Xiaolong", "" ] ]

2312.10822

Andr\'e Rodrigues

Andre Rodrigues, Alberto Rodrigues da Silva

Validation of Rigorous Requirements Specifications and Document Automation with the ITLingo RSL Language

10 pages, 13 figures, 2 tables, 1 spec

null

cs.SE

http://creativecommons.org/licenses/by/4.0/

Despite being an essential step in software development, writing requirements specifications is frequently performed in natural language, leading to issues like inconsistency, incompleteness, or ambiguity. The ITLingo initiative has introduced a requirements specification language named RSL to enhance the rigor and consistency of technical documentation. On the other hand, natural language processing (NLP) is a field that has been supporting the automatic analysis of requirements by helping to detect issues that may be difficult to see during a manual review. Once the requirements specifications are validated, it is important to automate the generation of documents for these specifications to reduce manual work, reduce errors, and to produce documentation in multiple formats that are more easily reusable or recognized by the different stakeholders. This paper reviews existing research and tools in the fields of requirements validation and document automation. We propose to extend RSL with validation of specifications based on customized checks, and on linguistic rules dynamically defined in the RSL itself. In addition, we also propose the automatic generation of documents from these specifications to JSON, TXT, or other file formats using template files. We use a fictitious business information system to support the explanation and to demonstrate how these validation checks can assist in writing better requirements specifications and then generate documents in multiple formats based on them. Finally, we evaluate the usability of the proposed validation and document automation approach through a user session.

[ { "version": "v1", "created": "Sun, 17 Dec 2023 21:39:26 GMT" } ]

2023-12-19T00:00:00

[ [ "Rodrigues", "Andre", "" ], [ "da Silva", "Alberto Rodrigues", "" ] ]

2308.01025

Young-Man Kim

Error Analysis of CORDIC Processor with FPGA Implementation

5 pages, 7 Figures

null

eess.SY cs.SY

http://creativecommons.org/licenses/by/4.0/

The coordinate rotation digital computer (CORDIC) is a shift-add based fast computing algorithm which has been found in many digital signal processing (DSP) applications. In this paper, a detailed error analysis based on mean square error criteria and its implementation on FPGA is presented. Two considered error sources are an angle approximation error and a quantization error due to finite word length in fixed-point number system. The error bound and variance are discussed in theory. The CORDIC algorithm is implemented on FPGA using the Xilinx Zynq-7000 development board called ZedBoard. Those results of theoretical error analysis are practically investigated by implementing it on actual FPGA board. In addition, Matlab is used to provide theoretical value as a baseline model by being set up in double-precision floating-point to compare it with the practical value of errors on FPGA implementation.

[ { "version": "v1", "created": "Wed, 2 Aug 2023 09:16:16 GMT" } ]

2023-08-03T00:00:00

[ [ "Kim", "Young-Man", "" ] ]

1801.05257

Maciej Dunajski

Maciej Dunajski, Paul Tod

Conics, Twistors, and anti-self-dual tri-K\"ahler metrics

29 pages, 2 figures. Final version, to appear in the Asian Journal of Mathematics

null

math.DG hep-th math-ph math.MP

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

We describe the range of the Radon transform on the space $M$ of irreducible conics in $\CP^2$ in terms of natural differential operators associated to the $SO(3)$-structure on $M=SL(3, \R)/SO(3)$ and its complexification. Following \cite{moraru} we show that for any function $F$ in this range, the zero locus of $F$ is a four-manifold admitting an anti-self-dual conformal structure which contains three different scalar-flat K\"ahler metrics. The corresponding twistor space ${\mathcal Z}$ admits a holomorphic fibration over $\CP^2$. In the special case where ${\mathcal Z}=\CP^3\setminus\CP^1$ the twistor lines project down to a four-parameter family of conics which form triangular Poncelet pairs with a fixed base conic.

[ { "version": "v1", "created": "Tue, 16 Jan 2018 13:48:57 GMT" }, { "version": "v2", "created": "Wed, 11 Dec 2019 23:16:52 GMT" } ]

2019-12-13T00:00:00

[ [ "Dunajski", "Maciej", "" ], [ "Tod", "Paul", "" ] ]

1108.5332

Eric Ricard

Sjoerd Dirksen and \'Eric Ricard

Some remarks on noncommutative Khintchine inequalities

null

10.1112/blms/bds107

null

math.OA math.FA

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Normalized free semi-circular random variables satisfy an upper Khintchine inequality in $L_\infty$. We show that this implies the corresponding upper Khintchine inequality in any noncommutative Banach function space. As applications, we obtain a very simple proof of a well-known interpolation result for row and column operator spaces and, moreover, answer an open question on noncommutative moment inequalities concerning a paper by Bekjan and Chen.

[ { "version": "v1", "created": "Fri, 26 Aug 2011 15:45:47 GMT" } ]

2014-02-26T00:00:00

[ [ "Dirksen", "Sjoerd", "" ], [ "Ricard", "Éric", "" ] ]

1704.03545

Shaun Stevens

Corinne Blondel, Guy Henniart and Shaun Stevens

Jordan blocks of cuspidal representations of symplectic groups

64 pages

Alg. Number Th. 12 (2018) 2327-2386

10.2140/ant.2018.12.2327

null

math.RT math.NT

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Let $G$ be a symplectic group over a nonarchimedean local field of characteristic zero and odd residual characteristic. Given an irreducible cuspidal representation of G, we determine its Langlands parameter (equivalently, its Jordan blocks in the language of Moeglin) in terms of the local data from which the representation is explicitly constructed, up to a possible unramified twist in each block of the parameter. We deduce a Ramification Theorem for $G$, giving a bijection between the set of endo-parameters for $G$ and the set of restrictions to wild inertia of discrete Langlands parameters for $G$, compatible with the local Langlands correspondence. The main tool consists in analysing the intertwining Hecke algebra of a good cover, in the sense of Bushnell--Kutzko, for parabolic induction from a cuspidal representation of $G\times\mathrm{GL}_n$, seen as a maximal Levi subgroup of a bigger symplectic group, in order to determine its (ir)reducibility; a criterion of Moeglin then relates this to Langlands parameters.

[ { "version": "v1", "created": "Tue, 11 Apr 2017 21:36:16 GMT" } ]

2019-02-13T00:00:00

[ [ "Blondel", "Corinne", "" ], [ "Henniart", "Guy", "" ], [ "Stevens", "Shaun", "" ] ]

hep-ph/9909404

Ian Low

Adam K. Leibovich, Ian Low, and I. Z. Rothstein

Extracting V_{ub} Without Recourse to Structure Functions

20 pages, no figures, minor typos corrected

Phys.Rev.D61:053006,2000

10.1103/PhysRevD.61.053006

null

hep-ph hep-ex

null

We present a closed form expression for |V_{ub}|^2/ |V_{tb} V_{ts}^*|^2 in terms of the endpoint photon and lepton spectra from the inclusive decays B -> X_s\gamma and B -> X_u\ell\nu, respectively, which includes the resummation of the endpoint logs at next to leading order and is completely independent of the B meson structure function. The use of this expression for extracting V_{ub} would eliminate the large systematic errors usually incurred due to the modeling of the heavy quarks' Fermi motion.

[ { "version": "v1", "created": "Thu, 16 Sep 1999 17:45:08 GMT" }, { "version": "v2", "created": "Tue, 21 Dec 1999 19:27:27 GMT" } ]

2014-11-17T00:00:00

[ [ "Leibovich", "Adam K.", "" ], [ "Low", "Ian", "" ], [ "Rothstein", "I. Z.", "" ] ]

1407.8318

Hannah Bergner

Conjugacy classes of $n$-tuples in semi-simple Jordan algebras

12 pages

null

math.RT math.RA

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Let $J$ be a finite-dimensional semi-simple Jordan algebra over an algebraically closed field of characteristic $0$. In this article, the diagonal action of the automorphism group of $J$ on the $n$-fold product $J\times\ldots \times J$ is studied. In particular, it is shown that the orbit through an $n$-tuple $x=(x_1,,\ldots,x_n)$ is closed if and only if the Jordan subalgebra generated by the elements $x_1,\ldots, x_n$ is semi-simple.

[ { "version": "v1", "created": "Thu, 31 Jul 2014 08:51:14 GMT" } ]

2014-08-01T00:00:00

[ [ "Bergner", "Hannah", "" ] ]

1504.00631

Pablo Shmerkin

Pablo Shmerkin and Boris Solomyak

Absolute continuity of complex Bernoulli convolutions

22 pages, no figures

Math. Proc. Cambridge Philos. Soc. 161 (2016), no. 3, 435--453

10.1017/S0305004116000335

null

math.DS math.CA

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

We prove that complex Bernoulli convolutions are absolutely continuous in the supercritical parameter region, outside of an exceptional set of parameters of zero Hausdorff dimension. Similar results are also obtained in the biased case, and for other parametrized families of self-similar sets and measures in the complex plane, extending earlier results.

[ { "version": "v1", "created": "Thu, 2 Apr 2015 18:16:07 GMT" } ]

2017-08-23T00:00:00

[ [ "Shmerkin", "Pablo", "" ], [ "Solomyak", "Boris", "" ] ]

2302.03365

Jaroslaw Juraszek

J. Juraszek, M. Konczykowski, D. Kaczorowski, and T. Cichorek

Temperature dependence of the lower critical field of the noncentrosymmetric superconductor $\alpha$-BiPd

14 pages, 5 figures

null

10.1002/pssr.202200423

null

cond-mat.supr-con

http://creativecommons.org/licenses/by/4.0/

Temperature variation of the lower critical field in the noncentrosymmetric superconductor $\alpha$-BiPd was probed by local magnetization measurements using Hall micromagnetometry, performed down to 0.3 K in a magnetic field applied along the crystallographic $b$ axis. Below a critical temperature $T_c \simeq$ 3.8 K, a conventional $H_{c1}(T)$ dependence was found, typical for a single-band $s$-wave BCS superconductor. The obtained data imply an absence of spin-triplet component in the superconducting wavefunction and marginal multiband effects in this material, which contradicts some literature reports.

[ { "version": "v1", "created": "Tue, 7 Feb 2023 10:17:16 GMT" }, { "version": "v2", "created": "Mon, 1 May 2023 16:12:05 GMT" } ]

2023-05-02T00:00:00

[ [ "Juraszek", "J.", "" ], [ "Konczykowski", "M.", "" ], [ "Kaczorowski", "D.", "" ], [ "Cichorek", "T.", "" ] ]

astro-ph/0411549

James E. Taylor

James E. Taylor (University of Oxford)

Substructure and Tidal Debris in Local Galaxies: Models and Observations

4 pages, 4 figures; to appear in the proceedings of "The Three-Dimensional Universe with Gaia", eds. M. Perryman & C. Turon (ESA SP-576); pdf version of the full poster can be found at http://www-astro.physics.ox.ac.uk/~jet/posters/GAIA_print.pdf

null

astro-ph

null

One of the generic predictions of modern cosmological models is that large galaxies should have experienced many mergers with smaller galaxies at some point in their past. Debris from such encounters will leave spatially distinct substructure in the stellar haloes of nearby galaxies, detectable for a few orbital periods after the final merger. In the case of the Milky Way, kinematic data from surveys such as RAVE and satellite missions such as GAIA will allow us to probe much more of the merger history, and to connect the properties of the stellar halo with those of local dwarf galaxies. To estimate what these programmes may discover, we review current observations of minor mergers in nearby galaxies, and compare these with predictions from a semi-analytic model of galaxy formation.

[ { "version": "v1", "created": "Thu, 18 Nov 2004 19:18:53 GMT" } ]

2007-05-23T00:00:00

[ [ "Taylor", "James E.", "", "University of Oxford" ] ]

2105.00238

Sobirjon Shoyimardonov

U.A.Rozikov, S.K.Shoyimardonov

An application of discrete-time SEIR model to the COVID-19 spread

13 pages, 4 figures

null

math.DS q-bio.PE

http://creativecommons.org/licenses/by/4.0/

The Susceptible-Exposed-Infectious-Recovered (SEIR) model is applied in several countries to ascertain the spread of the coronavirus disease 2019 (COVID-19). We consider discrete-time SEIR epidemic model in a closed system which does not account for births or deaths, total population size under consideration is constant. This dynamical system generated by a non-linear evolution operator depending on four parameters. Under some conditions on parameters we reduce the evolution operator to a quadratic stochastic operator (QSO) which maps 3-dimensional simplex to itself. We show that the QSO has uncountable set of fixed points (all laying on the boundary of the simplex). It is shown that all trajectories of the dynamical system (generated by the QSO) of the SEIR model are convergent (i.e. the QSO is regular). Moreover, we discuss the efficiency of the model for Uzbekistan.

[ { "version": "v1", "created": "Sat, 1 May 2021 12:47:01 GMT" } ]

2021-05-04T00:00:00

[ [ "Rozikov", "U. A.", "" ], [ "Shoyimardonov", "S. K.", "" ] ]

1107.0884

David A. Kessler

A. Dechant, E. Lutz, E. Barkai, D. A. Kessler

Solution of the Fokker-Planck equation with a logarithmic potential

null

10.1007/s10955-011-0363-z

null

cond-mat.stat-mech physics.atom-ph

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

We investigate the diffusion of particles in an attractive one-dimensional potential that grows logarithmically for large $|x|$ using the Fokker-Planck equation. An eigenfunction expansion shows that the Boltzmann equilibrium density does not fully describe the long time limit of this problem. Instead this limit is characterized by an infinite covariant density. This non-normalizable density yields the mean square displacement of the particles, which for a certain range of parameters exhibits anomalous diffusion. In a symmetric potential with an asymmetric initial condition, the average position decays anomalously slowly. This problem also has applications outside the thermal context, as in the diffusion of the momenta of atoms in optical molasses.

[ { "version": "v1", "created": "Tue, 5 Jul 2011 14:32:10 GMT" } ]

2015-05-28T00:00:00

[ [ "Dechant", "A.", "" ], [ "Lutz", "E.", "" ], [ "Barkai", "E.", "" ], [ "Kessler", "D. A.", "" ] ]

astro-ph/0512514

Laurent Chemin

Laurent Chemin, Olivier Hernandez, Chantal Balkowski, Claude Carignan, Philippe Amram

Harmonic analysis of the Ha velocity field of NGC 4254

3 pages, 2 figures, to appear in "Science Perspectives for 3D Spectroscopy", ESO Astrophysics Symposia, M. Kissler-Patig, M.M. Roth & J.R. Walsh eds

null

astro-ph

null

The ionized gas kinematics of the Virgo Cluster galaxy NGC 4254 (Messier 99) is analyzed by an harmonic decomposition of the velocity field into Fourier coefficients. The aims of this study are to measure the kinematical asymmetries of Virgo cluster galaxies and to connect them to the environment. The analysis reveals significant $m=1,2,4$ terms which origins are discussed.

[ { "version": "v1", "created": "Tue, 20 Dec 2005 21:00:53 GMT" } ]

2007-05-23T00:00:00

[ [ "Chemin", "Laurent", "" ], [ "Hernandez", "Olivier", "" ], [ "Balkowski", "Chantal", "" ], [ "Carignan", "Claude", "" ], [ "Amram", "Philippe", "" ] ]

2503.04481

Laura Cardani

The CUPID Collaboration: K. Alfonso, A. Armatol, C. Augier, F. T. Avignone III, O. Azzolini, A. S. Barabash, G. Bari, A. Barresi, D. Baudin, F. Bellini, G. Benato, L. Benussi, V. Berest, M. Beretta, M. Bettelli, M. Biassoni, J. Billard, F. Boffelli, V. Boldrini, E. D. Brandani, C. Brofferio, C. Bucci, M. Buchynska, J. Camilleri, A. Campani, J. Cao, C. Capelli, S. Capelli, V. Caracciolo, L. Cardani, P. Carniti, N. Casali, E. Celi, C. Chang, M. Chapellier, H. Chen, D. Chiesa, D. Cintas, M. Clemenza, I. Colantoni, S. Copello, O. Cremonesi, R. J. Creswick, A. D'Addabbo, I. Dafinei, F. A. Danevich, F. De Dominicis, M. De Jesus, P. de Marcillac, S. Dell'Oro, S. Di Domizio, S. Di Lorenzo, V. Domp\`e, A. Drobizhev, L. Dumoulin, G. Fantini, M. El Idrissi, M. Faverzani, E. Ferri, F. Ferri, F. Ferroni, E. Figueroa-Feliciano, J. Formaggio, A. Franceschi, S. Fu, B. K. Fujikawa, J. Gascon, S. Ghislandi, A. Giachero, M. Girola, L. Gironi, A. Giuliani, P. Gorla, C. Gotti, C. Grant, P. Gras, P. V. Guillaumon, T. D. Gutierrez, K. Han, E. V. Hansen, K. M. Heeger, D. L. Helis, H. Z. Huang, M. T. Hurst, L. Imbert, A. Juillard, G. Karapetrov, G. Keppel, H. Khalife, V. V. Kobychev, Yu. G. Kolomensky, R. Kowalski, H. Lattaud, M. Lefevre, M. Lisovenko, R. Liu, Y. Liu, P. Loaiza, L. Ma, F. Mancarella, N. Manenti, A. Mariani, L. Marini, S. Marnieros, M. Martinez, R. H. Maruyama, Ph. Mas, D. Mayer, G. Mazzitelli, E. Mazzola, Y. Mei, M. N. Moore, S. Morganti, T. Napolitano, M. Nastasi, J. Nikkel, C. Nones, E. B. Norman, V. Novosad, I. Nutini, T. O'Donnell, E. Olivieri, M. Olmi, B. T. Oregui, S. Pagan, M. Pageot, L. Pagnanini, D. Pasciuto, L. Pattavina, M. Pavan, \`O. Penek, H. Peng, G. Pessina, V. Pettinacci, C. Pira, S. Pirro, O. Pochon, D. V. Poda, T. Polakovic, O. G. Polischuk, E. G. Pottebaum, S. Pozzi, E. Previtali, A. Puiu, S. Puranam, S. Quitadamo, A. Rappoldi, G. L. Raselli, A. Ressa, R. Rizzoli, C. Rosenfeld, P. Rosier, M. Rossella, J. A. Scarpaci, B. Schmidt, R. Serino, A. Shaikina, K. Shang, V. Sharma, V. N. Shlegel, V. Singh, M. Sisti, P. Slocum, D. Speller, P. T. Surukuchi, L. Taffarello, S. Tomassini, C. Tomei, A. Torres, J. A. Torres, D. Tozzi, V. I. Tretyak, D. Trotta, M. Velazquez, K. J. Vetter, S. L. Wagaarachchi, G. Wang, L. Wang, R. Wang, B. Welliver, J. Wilson, K. Wilson, L. A. Winslow, F. Xie, M. Xue, J. Yang, V. Yefremenko, V. I. Umatov, M. M. Zarytskyy, T. Zhu, A. Zolotarova and S. Zucchelli

Innovating Bolometers' Mounting: A Gravity-Based Approach

null

physics.ins-det hep-ex nucl-ex

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Cryogenic calorimeters, also known as bolometers, are among the leading technologies for searching for rare events. The CUPID experiment is exploiting this technology to deploy a tonne-scale detector to search for neutrinoless double-beta decay of $^{100}$Mo. The CUPID collaboration proposed an innovative approach to assembling bolometers in a stacked configuration, held in position solely by gravity. This gravity-based assembly method is unprecedented in the field of bolometers and offers several advantages, including relaxed mechanical tolerances and simplified construction. To assess and optimize its performance, we constructed a medium-scale prototype hosting 28 Li$_2$MoO$_4$ crystals and 30 Ge light detectors, both operated as cryogenic calorimeters at the Laboratori Nazionali del Gran Sasso (Italy). Despite an unexpected excess of noise in the light detectors, the results of this test proved (i) a thermal stability better than $\pm$0.5 mK at 10 mK, (ii) a good energy resolution of Li$_2$MoO$_4$ bolometers, (6.6 $\pm$ 2.2) keV FWHM at 2615 keV, and (iii) a Li$_2$MoO$_4$ light yield measured by the closest light detector of 0.36 keV/MeV, sufficient to guarantee the particle identification requested by CUPID.

[ { "version": "v1", "created": "Thu, 6 Mar 2025 14:30:18 GMT" } ]

2025-03-07T00:00:00

[ [ "The CUPID Collaboration", "", "" ], [ "Alfonso", "K.", "" ], [ "Armatol", "A.", "" ], [ "Augier", "C.", "" ], [ "Avignone", "F. T.", "III" ], [ "Azzolini", "O.", "" ], [ "Barabash", "A. S.", "" ], [ "Bari", "G.", "" ], [ "Barresi", "A.", "" ], [ "Baudin", "D.", "" ], [ "Bellini", "F.", "" ], [ "Benato", "G.", "" ], [ "Benussi", "L.", "" ], [ "Berest", "V.", "" ], [ "Beretta", "M.", "" ], [ "Bettelli", "M.", "" ], [ "Biassoni", "M.", "" ], [ "Billard", "J.", "" ], [ "Boffelli", "F.", "" ], [ "Boldrini", "V.", "" ], [ "Brandani", "E. D.", "" ], [ "Brofferio", "C.", "" ], [ "Bucci", "C.", "" ], [ "Buchynska", "M.", "" ], [ "Camilleri", "J.", "" ], [ "Campani", "A.", "" ], [ "Cao", "J.", "" ], [ "Capelli", "C.", "" ], [ "Capelli", "S.", "" ], [ "Caracciolo", "V.", "" ], [ "Cardani", "L.", "" ], [ "Carniti", "P.", "" ], [ "Casali", "N.", "" ], [ "Celi", "E.", "" ], [ "Chang", "C.", "" ], [ "Chapellier", "M.", "" ], [ "Chen", "H.", "" ], [ "Chiesa", "D.", "" ], [ "Cintas", "D.", "" ], [ "Clemenza", "M.", "" ], [ "Colantoni", "I.", "" ], [ "Copello", "S.", "" ], [ "Cremonesi", "O.", "" ], [ "Creswick", "R. J.", "" ], [ "D'Addabbo", "A.", "" ], [ "Dafinei", "I.", "" ], [ "Danevich", "F. A.", "" ], [ "De Dominicis", "F.", "" ], [ "De Jesus", "M.", "" ], [ "de Marcillac", "P.", "" ], [ "Dell'Oro", "S.", "" ], [ "Di Domizio", "S.", "" ], [ "Di Lorenzo", "S.", "" ], [ "Dompè", "V.", "" ], [ "Drobizhev", "A.", "" ], [ "Dumoulin", "L.", "" ], [ "Fantini", "G.", "" ], [ "Idrissi", "M. El", "" ], [ "Faverzani", "M.", "" ], [ "Ferri", "E.", "" ], [ "Ferri", "F.", "" ], [ "Ferroni", "F.", "" ], [ "Figueroa-Feliciano", "E.", "" ], [ "Formaggio", "J.", "" ], [ "Franceschi", "A.", "" ], [ "Fu", "S.", "" ], [ "Fujikawa", "B. K.", "" ], [ "Gascon", "J.", "" ], [ "Ghislandi", "S.", "" ], [ "Giachero", "A.", "" ], [ "Girola", "M.", "" ], [ "Gironi", "L.", "" ], [ "Giuliani", "A.", "" ], [ "Gorla", "P.", "" ], [ "Gotti", "C.", "" ], [ "Grant", "C.", "" ], [ "Gras", "P.", "" ], [ "Guillaumon", "P. V.", "" ], [ "Gutierrez", "T. D.", "" ], [ "Han", "K.", "" ], [ "Hansen", "E. V.", "" ], [ "Heeger", "K. M.", "" ], [ "Helis", "D. L.", "" ], [ "Huang", "H. Z.", "" ], [ "Hurst", "M. T.", "" ], [ "Imbert", "L.", "" ], [ "Juillard", "A.", "" ], [ "Karapetrov", "G.", "" ], [ "Keppel", "G.", "" ], [ "Khalife", "H.", "" ], [ "Kobychev", "V. V.", "" ], [ "Kolomensky", "Yu. G.", "" ], [ "Kowalski", "R.", "" ], [ "Lattaud", "H.", "" ], [ "Lefevre", "M.", "" ], [ "Lisovenko", "M.", "" ], [ "Liu", "R.", "" ], [ "Liu", "Y.", "" ], [ "Loaiza", "P.", "" ], [ "Ma", "L.", "" ], [ "Mancarella", "F.", "" ], [ "Manenti", "N.", "" ], [ "Mariani", "A.", "" ], [ "Marini", "L.", "" ], [ "Marnieros", "S.", "" ], [ "Martinez", "M.", "" ], [ "Maruyama", "R. H.", "" ], [ "Mas", "Ph.", "" ], [ "Mayer", "D.", "" ], [ "Mazzitelli", "G.", "" ], [ "Mazzola", "E.", "" ], [ "Mei", "Y.", "" ], [ "Moore", "M. N.", "" ], [ "Morganti", "S.", "" ], [ "Napolitano", "T.", "" ], [ "Nastasi", "M.", "" ], [ "Nikkel", "J.", "" ], [ "Nones", "C.", "" ], [ "Norman", "E. B.", "" ], [ "Novosad", "V.", "" ], [ "Nutini", "I.", "" ], [ "O'Donnell", "T.", "" ], [ "Olivieri", "E.", "" ], [ "Olmi", "M.", "" ], [ "Oregui", "B. T.", "" ], [ "Pagan", "S.", "" ], [ "Pageot", "M.", "" ], [ "Pagnanini", "L.", "" ], [ "Pasciuto", "D.", "" ], [ "Pattavina", "L.", "" ], [ "Pavan", "M.", "" ], [ "Penek", "Ò.", "" ], [ "Peng", "H.", "" ], [ "Pessina", "G.", "" ], [ "Pettinacci", "V.", "" ], [ "Pira", "C.", "" ], [ "Pirro", "S.", "" ], [ "Pochon", "O.", "" ], [ "Poda", "D. V.", "" ], [ "Polakovic", "T.", "" ], [ "Polischuk", "O. G.", "" ], [ "Pottebaum", "E. G.", "" ], [ "Pozzi", "S.", "" ], [ "Previtali", "E.", "" ], [ "Puiu", "A.", "" ], [ "Puranam", "S.", "" ], [ "Quitadamo", "S.", "" ], [ "Rappoldi", "A.", "" ], [ "Raselli", "G. L.", "" ], [ "Ressa", "A.", "" ], [ "Rizzoli", "R.", "" ], [ "Rosenfeld", "C.", "" ], [ "Rosier", "P.", "" ], [ "Rossella", "M.", "" ], [ "Scarpaci", "J. A.", "" ], [ "Schmidt", "B.", "" ], [ "Serino", "R.", "" ], [ "Shaikina", "A.", "" ], [ "Shang", "K.", "" ], [ "Sharma", "V.", "" ], [ "Shlegel", "V. N.", "" ], [ "Singh", "V.", "" ], [ "Sisti", "M.", "" ], [ "Slocum", "P.", "" ], [ "Speller", "D.", "" ], [ "Surukuchi", "P. T.", "" ], [ "Taffarello", "L.", "" ], [ "Tomassini", "S.", "" ], [ "Tomei", "C.", "" ], [ "Torres", "A.", "" ], [ "Torres", "J. A.", "" ], [ "Tozzi", "D.", "" ], [ "Tretyak", "V. I.", "" ], [ "Trotta", "D.", "" ], [ "Velazquez", "M.", "" ], [ "Vetter", "K. J.", "" ], [ "Wagaarachchi", "S. L.", "" ], [ "Wang", "G.", "" ], [ "Wang", "L.", "" ], [ "Wang", "R.", "" ], [ "Welliver", "B.", "" ], [ "Wilson", "J.", "" ], [ "Wilson", "K.", "" ], [ "Winslow", "L. A.", "" ], [ "Xie", "F.", "" ], [ "Xue", "M.", "" ], [ "Yang", "J.", "" ], [ "Yefremenko", "V.", "" ], [ "Umatov", "V. I.", "" ], [ "Zarytskyy", "M. M.", "" ], [ "Zhu", "T.", "" ], [ "Zolotarova", "A.", "" ], [ "Zucchelli", "S.", "" ] ]

1706.02123

Isabel Mira Oldengott

Isabel M. Oldengott, Thomas Tram, Cornelius Rampf and Yvonne Y. Y. Wong

Interacting neutrinos in cosmology: exact description and constraints

25 pages, 11 figures; accepted for publication in JCAP

JCAP 1711 (2017) no.11, 027

10.1088/1475-7516/2017/11/027

null

astro-ph.CO hep-ph

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

We consider the impact of neutrino self-interactions described by an effective four-fermion coupling on cosmological observations. Implementing the exact Boltzmann hierarchy for interacting neutrinos first derived in [arxiv:1409.1577] into the Boltzmann solver CLASS, we perform a detailed numerical analysis of the effects of the interaction on the cosmic microwave background (CMB) anisotropies, and compare our results with known approximations in the literature. While we find good agreement between our exact approach and the relaxation time approximation used in some recent studies, the popular $\left( c_{\text{eff}}^2,c_{\text{vis}}^2 \right)$-parameterisation fails to reproduce the correct scale dependence of the CMB temperature power spectrum. We then proceed to derive constraints on the effective coupling constant $G_{\text{eff}}$ using currently available cosmological data via an MCMC analysis. Interestingly, our results reveal a bimodal posterior distribution, where one mode represents the standard $\Lambda$CDM limit with $G_{\rm eff} \lesssim 10^8 \, G_{\rm F}$, and the other a scenario in which neutrinos self-interact with an effective coupling constant $G_{\rm eff} \simeq 3 \times 10^9 \, G_{\rm F}$.

[ { "version": "v1", "created": "Wed, 7 Jun 2017 10:49:58 GMT" }, { "version": "v2", "created": "Tue, 28 Nov 2017 10:09:54 GMT" } ]

2017-11-29T00:00:00

[ [ "Oldengott", "Isabel M.", "" ], [ "Tram", "Thomas", "" ], [ "Rampf", "Cornelius", "" ], [ "Wong", "Yvonne Y. Y.", "" ] ]

2211.02127

Siddharth Nayak

Siddharth Nayak, Kenneth Choi, Wenqi Ding, Sydney Dolan, Karthik Gopalakrishnan, Hamsa Balakrishnan

Scalable Multi-Agent Reinforcement Learning through Intelligent Information Aggregation

9 pages, 7 figures, 8 tables, 5 pages appendix, Code: https://github.com/nsidn98/InforMARL

null

cs.MA cs.AI cs.RO

http://creativecommons.org/licenses/by/4.0/

We consider the problem of multi-agent navigation and collision avoidance when observations are limited to the local neighborhood of each agent. We propose InforMARL, a novel architecture for multi-agent reinforcement learning (MARL) which uses local information intelligently to compute paths for all the agents in a decentralized manner. Specifically, InforMARL aggregates information about the local neighborhood of agents for both the actor and the critic using a graph neural network and can be used in conjunction with any standard MARL algorithm. We show that (1) in training, InforMARL has better sample efficiency and performance than baseline approaches, despite using less information, and (2) in testing, it scales well to environments with arbitrary numbers of agents and obstacles. We illustrate these results using four task environments, including one with predetermined goals for each agent, and one in which the agents collectively try to cover all goals. Code available at https://github.com/nsidn98/InforMARL.

[ { "version": "v1", "created": "Thu, 3 Nov 2022 20:02:45 GMT" }, { "version": "v2", "created": "Sun, 12 Feb 2023 16:30:38 GMT" }, { "version": "v3", "created": "Tue, 16 May 2023 15:17:46 GMT" } ]

2023-05-17T00:00:00

[ [ "Nayak", "Siddharth", "" ], [ "Choi", "Kenneth", "" ], [ "Ding", "Wenqi", "" ], [ "Dolan", "Sydney", "" ], [ "Gopalakrishnan", "Karthik", "" ], [ "Balakrishnan", "Hamsa", "" ] ]

physics/0306096

J. R. Bogart

J. Bogart

Calibration Infrastructure for the GLAST LAT

Talk from the 2003 Computing in High Energy and Nuclear Physics (CHEP03), La Jolla, Ca, USA, March 2003, 5 pages, LaTeX, 2 eps figures. PSN MOKT001

null

SLAC-PUB-9890

physics.ins-det

null

The GLAST LAT calibration infrastructure is designed to accommodate a wide range of time-varying data types, including at a minimum hardware status bits, conversion constants, and alignment for the GLAST LAT instrument and its prototypes. The system will support persistent XML and ROOT data to begin with; other physical formats will be added if necessary. In addition to the "bulk data", each data set will have associated with it a row in a rdbms table containing metadata, such as timestamps, data format, pointer to the location of the bulk data, etc., which will be used to identify and locate the appropriate data set for a particular application. As GLAST uses the Gaudi framework for event processing, the Calibration Infrastructure makes use of several Gaudi elements and concepts, such as conversion services, converters and data objects and implements the prescribed Gaudi interfaces (IDetDataSvc, IValidity, ..). This insures that calibration data will always be valid and appropriate for the event being processed. The persistent representation of a calibration dataset as two physical pieces in different formats complicates the conversion process somewhat: two cooperating conversion services are involved in the conversion of any single dataset.

[ { "version": "v1", "created": "Thu, 12 Jun 2003 17:02:25 GMT" } ]

2007-05-23T00:00:00

[ [ "Bogart", "J.", "" ] ]

1408.3067

Marianna Safronova

M. S. Safronova, U. I. Safronova, and Charles W. Clark

Relativistic all-order calculations of Th, Th$^{+}$ and Th$^{2+}$ atomic properties

13 pages

null

10.1103/PhysRevA.90.032512

null

physics.atom-ph physics.optics quant-ph

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Excitation energies, term designations, and $g$-factors of Th, Th$^{+}$ and Th$^{2+}$ are determined using a relativistic hybrid configuration interaction (CI) + all-order approach that combines configuration interaction and linearized coupled-cluster methods. The results are compared with other theory and experiment where available. We find some "vanishing" $g$-factors, similar to those known in lanthanide spectra. Reduced matrix elements, oscillator strengths, transition rates, and lifetimes are determined for Th$^{2+}$. To estimate the uncertainties of our results, we compared our values with the available experimental lifetimes for higher $5f7p\ ^3G_{4}$, $7s7p\ ^3P_{0}$, $7s7p\ ^3P_{1}$, and $6d7p\ ^3F_{4}$ levels of Th$^{2+}$. These calculations provide a benchmark test of the CI+all-order method for heavy systems with several valence electrons and yield recommended values for transition rates and lifetimes of Th$^{2+}$.

[ { "version": "v1", "created": "Wed, 13 Aug 2014 17:59:31 GMT" } ]

2015-06-22T00:00:00

[ [ "Safronova", "M. S.", "" ], [ "Safronova", "U. I.", "" ], [ "Clark", "Charles W.", "" ] ]

1411.4532

Jude Laverock

J. Laverock and S. Kittiwatanakul and A. A. Zakharov and Y. R. Niu and B. Chen and S. A. Wolf and J. W. Lu and K. E. Smith

Direct Observation of Decoupled Structural and Electronic Transitions and an Ambient Pressure Monoclinic-Like Metallic Phase of VO$_2$

null

Phys. Rev. Lett. 113, 216402 (2014)

10.1103/PhysRevLett.113.216402

null

cond-mat.str-el cond-mat.mes-hall cond-mat.mtrl-sci

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

We report the simultaneous measurement of the structural and electronic components of the metal-insulator transition of VO$_2$ using electron and photoelectron spectroscopies and microscopies. We show that these evolve over different temperature scales, and are separated by an unusual monoclinic-like metallic phase. Our results provide conclusive evidence that the new monoclinic-like metallic phase, recently identified in high-pressure and nonequilibrium measurements, is accessible in the thermodynamic transition at ambient pressure, and we discuss the implications of these observations on the nature of the MIT in VO$_2$.

[ { "version": "v1", "created": "Mon, 17 Nov 2014 16:25:21 GMT" } ]

2014-11-18T00:00:00

[ [ "Laverock", "J.", "" ], [ "Kittiwatanakul", "S.", "" ], [ "Zakharov", "A. A.", "" ], [ "Niu", "Y. R.", "" ], [ "Chen", "B.", "" ], [ "Wolf", "S. A.", "" ], [ "Lu", "J. W.", "" ], [ "Smith", "K. E.", "" ] ]

2302.00707

Melanie Bancilhon

Melanie Bancilhon, AJ Wright, Sunwoo Ha, Jordan Crouser, Alvitta Ottley

Why Combining Text and Visualization Could Improve Bayesian Reasoning: A Cognitive Load Perspective

null

10.1145/3544548.3581218

null

cs.HC

http://creativecommons.org/licenses/by/4.0/

Investigations into using visualization to improve Bayesian reasoning and advance risk communication have produced mixed results, suggesting that cognitive ability might affect how users perform with different presentation formats. Our work examines the cognitive load elicited when solving Bayesian problems using icon arrays, text, and a juxtaposition of text and icon arrays. We used a three-pronged approach to capture a nuanced picture of cognitive demand and measure differences in working memory capacity, performance under divided attention using a dual-task paradigm, and subjective ratings of self-reported effort. We found that individuals with low working memory capacity made fewer errors and experienced less subjective workload when the problem contained an icon array compared to text alone, showing that visualization improves accuracy while exerting less cognitive demand. We believe these findings can considerably impact accessible risk communication, especially for individuals with low working memory capacity.

[ { "version": "v1", "created": "Wed, 1 Feb 2023 19:02:26 GMT" } ]

2023-02-03T00:00:00

[ [ "Bancilhon", "Melanie", "" ], [ "Wright", "AJ", "" ], [ "Ha", "Sunwoo", "" ], [ "Crouser", "Jordan", "" ], [ "Ottley", "Alvitta", "" ] ]

1109.3913

Jorge Sanz-Forcada

J. Sanz-Forcada, I. Ribas, G. Micela, A. Pollock, D. Garcia-Alvarez, E. Solano, C. Eiroa

Planets and X-rays: a radiation diet

Proceedings of the 16th Workshop on Cool Stars, Stellar Systems, and the Sun (2010, PASP conference series, in press). Preliminar results

null

astro-ph.EP

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

According to theory, high energy emission from the coronae of cool stars can severely erode the atmosphere of orbiting planets. To test the long term effects of the erosion we study a large sample of planet-hosting stars observed in X-rays. The results reveal that massive planets (Mp sin i > 1.5 Mj) may survive only if exposed to low accumulated coronal radiation. The planet HD 209458 b might have lost more than 1 Mj already, and other cases, like tau Boo b, could be losing mass at a rate of 3.4 Earth masses per Gyr. The strongest erosive effects would take place during the first stages of the stellar life, when the faster rotation generates more energetic coronal radiation. The planets with higher density seem to resist better the radiation effects, as foreseen by models. Current models need to be improved to explain the observed distribution of planetary masses with the coronal radiation received.

[ { "version": "v1", "created": "Sun, 18 Sep 2011 21:38:43 GMT" } ]

2015-03-19T00:00:00

[ [ "Sanz-Forcada", "J.", "" ], [ "Ribas", "I.", "" ], [ "Micela", "G.", "" ], [ "Pollock", "A.", "" ], [ "Garcia-Alvarez", "D.", "" ], [ "Solano", "E.", "" ], [ "Eiroa", "C.", "" ] ]

math/9804138

Nicola Ciccoli

N. Ciccoli

Induction of quantum group representations

16 pages, Latex file. Submitted to Journal of Geometry and Physics

null

10.1016/S0393-0440(99)00004-2

DM-UNIBO 96/16

math.QA

null

Induced representations for quantum groups are defined starting from coisotropic quantum subgroups and their main properties are proved. When the coisotropic quantum subgroup has a suitably defined section such representations can be realized on associated quantum bundles on general embeddable quantum homogeneous spaces.

[ { "version": "v1", "created": "Wed, 29 Apr 1998 18:23:28 GMT" } ]

2009-10-31T00:00:00

[ [ "Ciccoli", "N.", "" ] ]

1503.03991

Jean-Christophe Aval

Jean-Christophe Aval and Fran\c{c}ois Bergeron

Interlaced rectangular parking functions

null

math.CO

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

The aim of this work is to extend to a general $S_m\times S_n$-module context the Grossman-Bizley paradigm that allows the enumeration of Dyck paths in a $m\times n$-rectangle. We obtain an explicit formula for the the "bi-Frobenius" characteristic of what we call {\em interlaced} rectangular parking functions in an $m\times n$-rectangle. These are obtained by labelling the $n$ vertical steps of an $m\times n$-Dyck path by the numbers from $1$ to $n$, together with an independent labelling of its horizontal steps by integers from $1$ to $m$. Our formula specializes to give the Frobenius characteristic of the $S_n$-module of $m\times n$-parking functions in the general situation. Hence, it subsumes the result of Armstrong-Loehr-Warrington which furnishes such a formula for the special case when $m$ and $n$ are coprime integers.

[ { "version": "v1", "created": "Fri, 13 Mar 2015 09:14:53 GMT" } ]

2015-03-16T00:00:00

[ [ "Aval", "Jean-Christophe", "" ], [ "Bergeron", "François", "" ] ]

1907.12693

Guillermo Arreaga-Garcia

G. Arreaga-Garcia

The effects of a compressive velocity pulse on a collapsing turbulent clump

accepted for publication in Astron. Nachrichten

null

10.1002/asna.201913548

null

astro-ph.SR astro-ph.GA

http://creativecommons.org/publicdomain/zero/1.0/

High-resolution hydrodynamical simulations are presented to follow the gravitational collapse of a uniform turbulent clump, upon which a purely radial compressive velocity pulse is activated in the midst of the evolution of the clump, when its turbulent state has been fully developed. The shape of the velocity pulse is determined basically by two free parameters: the velocity $V_0$ and the initial radial position $r_0$. In the present paper, models are considered in which the velocity $V_0$ takes the values 2, 5, 10, 20, and 50 times the speed of sound of the clump $c_0$, while $r_0$ is fixed for all the models. The collapse of the model with $2 \, c_0$ goes faster as a consequence of the velocity pulse, while the cluster formed in the central region of the isolated clump mainly stays the same. In the models with greater velocity $V_0$, the evolution of the isolated clump is significantly changed, so that a dense shell of gas forms around $r_0$ and moves radially inward. The radial profile of the density and velocity as well as the mass contained in the dense shell of gas are calculated, and it is found that (i) the higher the velocity $V_0$, the less mass is contained in the shell; (ii) there is a critical velocity of the pulse, around $10 \, c_0$, such that for shock models with a lower velocity, there will be a well defined dense central region in the shocked clump surrounded by the shell.

[ { "version": "v1", "created": "Tue, 30 Jul 2019 00:22:08 GMT" } ]

2019-10-09T00:00:00

[ [ "Arreaga-Garcia", "G.", "" ] ]

2407.21428

Dengsheng Chen

Dengsheng Chen, Jie Hu, Xiaoming Wei, Enhua Wu

Deformable 3D Shape Diffusion Model

null

cs.GR cs.AI

http://creativecommons.org/licenses/by-nc-sa/4.0/

The Gaussian diffusion model, initially designed for image generation, has recently been adapted for 3D point cloud generation. However, these adaptations have not fully considered the intrinsic geometric characteristics of 3D shapes, thereby constraining the diffusion model's potential for 3D shape manipulation. To address this limitation, we introduce a novel deformable 3D shape diffusion model that facilitates comprehensive 3D shape manipulation, including point cloud generation, mesh deformation, and facial animation. Our approach innovatively incorporates a differential deformation kernel, which deconstructs the generation of geometric structures into successive non-rigid deformation stages. By leveraging a probabilistic diffusion model to simulate this step-by-step process, our method provides a versatile and efficient solution for a wide range of applications, spanning from graphics rendering to facial expression animation. Empirical evidence highlights the effectiveness of our approach, demonstrating state-of-the-art performance in point cloud generation and competitive results in mesh deformation. Additionally, extensive visual demonstrations reveal the significant potential of our approach for practical applications. Our method presents a unique pathway for advancing 3D shape manipulation and unlocking new opportunities in the realm of virtual reality.

[ { "version": "v1", "created": "Wed, 31 Jul 2024 08:24:42 GMT" } ]

2024-08-01T00:00:00

[ [ "Chen", "Dengsheng", "" ], [ "Hu", "Jie", "" ], [ "Wei", "Xiaoming", "" ], [ "Wu", "Enhua", "" ] ]

2506.06935

Willie Padilla

Darui Lu, Jordan M. Malof, and Willie J. Padilla

An Agentic Framework for Autonomous Metamaterial Modeling and Inverse Design

22 pages, 6 figures

null

cs.AI cond-mat.mtrl-sci

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Recent significant advances in integrating multiple Large Language Model (LLM) systems have enabled Agentic Frameworks capable of performing complex tasks autonomously, including novel scientific research. We develop and demonstrate such a framework specifically for the inverse design of photonic metamaterials. When queried with a desired optical spectrum, the Agent autonomously proposes and develops a forward deep learning model, accesses external tools via APIs for tasks like simulation and optimization, utilizes memory, and generates a final design via a deep inverse method. The framework's effectiveness is demonstrated in its ability to automate, reason, plan, and adapt. Notably, the Agentic Framework possesses internal reflection and decision flexibility, permitting highly varied and potentially novel outputs.

[ { "version": "v1", "created": "Sat, 07 Jun 2025 22:10:05 GMT" }, { "version": "v2", "created": "Tue, 15 Jul 2025 11:01:25 GMT" } ]

2025-07-16T00:00:00

[ [ "Lu", "Darui", "" ], [ "Malof", "Jordan M.", "" ], [ "Padilla", "Willie J.", "" ] ]

1712.08196

Sergey V. Lototsky

H.-J. Kim and S. V. Lototsky

Heat Equation With a Geometric Rough Path Potential in One Space Dimension: Existence and Regularity of Solution

null

math.AP math.PR

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

A solution of the heat equation with a distribution-valued potential is constructed by regularization. When the potential is the generalized derivative of a H\"{o}lder continuous function, regularity of the resulting solution is in line with the standard parabolic theory.

[ { "version": "v1", "created": "Thu, 21 Dec 2017 20:17:36 GMT" } ]

2017-12-25T00:00:00

[ [ "Kim", "H. -J.", "" ], [ "Lototsky", "S. V.", "" ] ]

astro-ph/9707323

Dante Minniti

The MACHO Collaboration: C. Alcock, R.A. Allsman, D.R. Alves, T.S. Axelrod, A. Becker, D.P. Bennett, K.H. Cook, K.C. Freeman, K. Griest, M.J. Lehner, S.L. Marshall, D. Minniti, B.A. Peterson, M.R. Pratt, P.J. Quinn, A.W. Rodgers, A. Rorabeck, C.W. Stubbs, W. Sutherland, A. Tomaney, T. Vandehei, and D.L. Welch

Bulge delta Scuti Stars in the MACHO Database

6 pages, PostScript file. To appear in IAU Symp. 189 on "Fundamental Stellar Properties: Confrontation between Theory and Observations", eds. T. Bedding et al. (Kluwer: Dordrecht), 1997

null

astro-ph

null

We describe the search for delta Scuti stars in the MACHO database of bulge fields. Concentrating on a sample of high amplitude delta Scutis, we examine the light curves and pulsation modes. We also discuss their spatial distribution and evolutionary status using mean colors and absolute magnitudes.

[ { "version": "v1", "created": "Tue, 29 Jul 1997 19:10:47 GMT" } ]

2007-05-23T00:00:00

[ [ "The MACHO Collaboration", "", "" ], [ "Alcock", "C.", "" ], [ "Allsman", "R. A.", "" ], [ "Alves", "D. R.", "" ], [ "Axelrod", "T. S.", "" ], [ "Becker", "A.", "" ], [ "Bennett", "D. P.", "" ], [ "Cook", "K. H.", "" ], [ "Freeman", "K. C.", "" ], [ "Griest", "K.", "" ], [ "Lehner", "M. J.", "" ], [ "Marshall", "S. L.", "" ], [ "Minniti", "D.", "" ], [ "Peterson", "B. A.", "" ], [ "Pratt", "M. R.", "" ], [ "Quinn", "P. J.", "" ], [ "Rodgers", "A. W.", "" ], [ "Rorabeck", "A.", "" ], [ "Stubbs", "C. W.", "" ], [ "Sutherland", "W.", "" ], [ "Tomaney", "A.", "" ], [ "Vandehei", "T.", "" ], [ "Welch", "D. L.", "" ] ]

astro-ph/9608024

Belinda Wilkes

B. J. Wilkes, P. J. Green, S. Mathur and J. C. McDowell (Harvard-Smithsonian Center for Astrophysics)

Emission Lines and the Spectral Energy Distributions of Quasars

latex file and sty file. To appear in Emission Lines in Active Galaxies: New Methods and Techniques, ed. B.M.Peterson, F.-Z. CHeng and A.S.Wilson (San Pranciscio: Astronomical Society of the Pacific) in press (1997)

null

astro-ph

null

Many years of study have failed to conclusively establish relations between a quasar's spectral energy distribution (SED) and the emission lines it is thought to produce. This is at least partially due to the lack of well-observed SEDs. We present initial results from a line--SED study for a sample of 43 quasars and active galaxies for which we have optical and ultra-violet spectra and far-infrared--X-ray SEDs. We present the results of tests for correlations between line equivalent widths and SED luminosity and slope parameters and compare these results to those from earlier studies. We find that the Baldwin effect is weaker when the luminosity is defined close to the ionising continuum of that line and conclude that the detailed SED is likely to be important in making further progress.

[ { "version": "v1", "created": "Mon, 5 Aug 1996 19:24:33 GMT" } ]

2007-05-23T00:00:00

[ [ "Wilkes", "B. J.", "", "Harvard-Smithsonian Center for Astrophysics" ], [ "Green", "P. J.", "", "Harvard-Smithsonian Center for Astrophysics" ], [ "Mathur", "S.", "", "Harvard-Smithsonian Center for Astrophysics" ], [ "McDowell", "J. C.", "", "Harvard-Smithsonian Center for Astrophysics" ] ]

astro-ph/0401442

Scott Croom

Scott Croom (1), David Schade (2), Brian Boyle (3), Tom Shanks (4), Lance Miller (5), Robert Smith (6) ((1) Anglo-Australian Observatory, (2) Dominion Astrophysical Observatory, (3) Australia Telescope National Facility, (4) Durham University, (5) Oxford University, (6) Liverpool John Moores University)

Gemini imaging of QSO host galaxies at z~2

13 pages, 8 figures, using emulateapj.cls. Accepted for publication in ApJ. Version with high quality figures available from http://www.aao.gov.au/local/www/scroom/publications/

Astrophys.J.606:126-138,2004

10.1086/382747

null

astro-ph

null

We present results of a Gemini adaptive optics (AO) imaging program to investigate the host galaxies of typical QSOs at z~2. Our aim is to study the host galaxies of typical, L*_qso QSOs at the epoch of peak QSO and star formation activity. The large database of faint QSOs provided by the 2dF QSO Redshift Survey allows us to select a sample of QSOs at z=1.75-2.5 which have nearby (<12 arcsecond separation) bright stars suitable for use as AO guide stars. We have observed a sample of 9 QSOs. The images of these sources have AO corrected full-width at half-maximum of between 0.11 and 0.25 arcseconds. We use multiple observations of point spread function (PSF) calibration star pairs in order to quantify any uncertainty in the PSF. We then factored these uncertainties into our modelling of the QSO plus host galaxy. In only one case did we convincingly detect a host (2QZ J133311.4+001949, at z=1.93). This host galaxy has K=18.5+-0.2 mag with a half-light radius, r_e=0.55+-0.1'', equivalent to ~3L*_gal assuming a simple passively evolving model. From detailed simulations of our host galaxy modelling process, we find that for four of our targets we should be sensitive to host galaxies that are equivalent to ~2L*_gal (passively evolved). Our non-detections therefore place tight constraints on the properties of L*_qso QSO host galaxies, which can be no brighter (after allowing for passive evolution) than the host galaxies of L*_qso AGN at low redshift, although the QSOs themselves are a factor of ~50 brighter. This implies that either the fueling efficiency is much greater at high redshift, or that more massive black holes are active at high redshift.

[ { "version": "v1", "created": "Wed, 21 Jan 2004 22:39:52 GMT" } ]

2011-03-10T00:00:00

[ [ "Croom", "Scott", "" ], [ "Schade", "David", "" ], [ "Boyle", "Brian", "" ], [ "Shanks", "Tom", "" ], [ "Miller", "Lance", "" ], [ "Smith", "Robert", "" ] ]

0902.3801

Bin Wang

Whittaker Modules for Graded Lie Algebras

11pages, fixed a number of errors

null

math.RT

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

In this paper, we study Whittaker modules for graded Lie algebras. We define Whittaker modules for a class of graded Lie algebras and obtain a bijective correspondence between the set of isomorphism classes of Whittaker modules and the set of ideals of a polynomial ring, parallel to a result from the classical setting and the case of the Virasoro algebra. As a consequence of this, we obtain a classification of simple Whittaker modules for such algebras. Also, we study some concrete algebras as examples.

[ { "version": "v1", "created": "Sun, 22 Feb 2009 16:21:01 GMT" }, { "version": "v2", "created": "Wed, 4 Mar 2009 14:04:50 GMT" } ]

2009-03-04T00:00:00

[ [ "Wang", "Bin", "" ] ]

1102.2642

Brian LeRoy

Jiamin Xue, Javier Sanchez-Yamagishi, D. Bulmash, Philippe Jacquod, A. Deshpande, K. Watanabe, T. Taniguchi, Pablo Jarillo-Herrero, B.J. LeRoy

STM Spectroscopy of ultra-flat graphene on hexagonal boron nitride

Nature Materials advance online publication 13/02/2011

Nature Materials 10, 282--285 (2011)

10.1038/nmat2968

null

cond-mat.mtrl-sci cond-mat.mes-hall

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Graphene has demonstrated great promise for future electronics technology as well as fundamental physics applications because of its linear energy-momentum dispersion relations which cross at the Dirac point. However, accessing the physics of the low density region at the Dirac point has been difficult because of the presence of disorder which leaves the graphene with local microscopic electron and hole puddles, resulting in a finite density of carriers even at the charge neutrality point. Efforts have been made to reduce the disorder by suspending graphene, leading to fabrication challenges and delicate devices which make local spectroscopic measurements difficult. Recently, it has been shown that placing graphene on hexagonal boron nitride (hBN) yields improved device performance. In this letter, we use scanning tunneling microscopy to show that graphene conforms to hBN, as evidenced by the presence of Moire patterns in the topographic images. However, contrary to recent predictions, this conformation does not lead to a sizable band gap due to the misalignment of the lattices. Moreover, local spectroscopy measurements demonstrate that the electron-hole charge fluctuations are reduced by two orders of magnitude as compared to those on silicon oxide. This leads to charge fluctuations which are as small as in suspended graphene, opening up Dirac point physics to more diverse experiments than are possible on freestanding devices.

[ { "version": "v1", "created": "Sun, 13 Feb 2011 22:10:06 GMT" } ]

2011-05-04T00:00:00

[ [ "Xue", "Jiamin", "" ], [ "Sanchez-Yamagishi", "Javier", "" ], [ "Bulmash", "D.", "" ], [ "Jacquod", "Philippe", "" ], [ "Deshpande", "A.", "" ], [ "Watanabe", "K.", "" ], [ "Taniguchi", "T.", "" ], [ "Jarillo-Herrero", "Pablo", "" ], [ "LeRoy", "B. J.", "" ] ]

1507.05620

Wout Merbis

Arjun Bagchi, Daniel Grumiller and Wout Merbis

Stress tensor correlators in three-dimensional gravity

6 pages, v2: corrected signs

Phys. Rev. D 93, 061502 (2016)

10.1103/PhysRevD.93.061502

MIT-CTP-4694, TUW-15-13

hep-th gr-qc

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

We calculate holographically arbitrary n-point correlators of the boundary stress tensor in three-dimensional Einstein gravity with negative or vanishing cosmological constant. We provide explicit expressions up to 5-point (connected) correlators and show consistency with the Galilean conformal field theory Ward identities and recursion relations of correlators, which we derive. This provides a novel check of flat space holography in three dimensions.

[ { "version": "v1", "created": "Mon, 20 Jul 2015 20:00:34 GMT" }, { "version": "v2", "created": "Tue, 11 Aug 2015 11:29:26 GMT" } ]

2016-03-23T00:00:00

[ [ "Bagchi", "Arjun", "" ], [ "Grumiller", "Daniel", "" ], [ "Merbis", "Wout", "" ] ]

1911.11159

Mariel Supina

Federico Ardila, Mariel Supina, Andr\'es R. Vindas-Mel\'endez

The equivariant Ehrhart theory of the permutahedron

v2: Minor edits. To appear in Proceedings of the American Mathematical Society. 15 pages, 2 figures, 3 tables, comments welcome

null

math.CO

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Equivariant Ehrhart theory enumerates the lattice points in a polytope with respect to a group action. Answering a question of Stapledon, we describe the equivariant Ehrhart theory of the permutahedron, and we prove his Effectiveness Conjecture in this special case.

[ { "version": "v1", "created": "Mon, 25 Nov 2019 19:01:03 GMT" }, { "version": "v2", "created": "Fri, 17 Jul 2020 16:55:50 GMT" } ]

2020-07-20T00:00:00

[ [ "Ardila", "Federico", "" ], [ "Supina", "Mariel", "" ], [ "Vindas-Meléndez", "Andrés R.", "" ] ]

1211.3618

Edward Malec

Janusz Karkowski and Edward Malec

Bondi accretion onto cosmological black holes

misprints corrected, matches published version

Phys. Rev. D15, vol. 87, 04400(2013)

10.1103/PhysRevD.87.044007

null

gr-qc astro-ph.CO

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

In this paper we investigate a steady accretion within the Einstein-Straus vacuole, in the presence of the cosmological constant. The dark energy damps the mass accretion rate and --- above certain limit --- completely stops the steady accretion onto black holes, which in particular is prohibited in the inflation era and after (roughly) $10^{12}$ years from Big Bang (assuming the presently known value of the cosmological constant). Steady accretion would not exist in the late phases of the Penrose's scenario - known as the Weyl curvature hypothesis - of the evolution of the Universe.

[ { "version": "v1", "created": "Thu, 15 Nov 2012 14:40:42 GMT" }, { "version": "v2", "created": "Wed, 20 Feb 2013 12:41:00 GMT" } ]

2015-06-12T00:00:00

[ [ "Karkowski", "Janusz", "" ], [ "Malec", "Edward", "" ] ]

hep-ph/0505223

Vittorio Lubicz

Determination of V_us: recent progresses from theory

Prepared for 17th Les Rencontres de Physique de la Vallee d'Aoste: Results and Perspectives in Particle Physics, La Thuile, Italy, February 27-March 5, 2005

null

hep-ph

null

Recent experimental and theoretical results on kaon semileptonic decays have significantly improved the determination of the CKM matrix element V_us. After briefly summarizing the impact of the new experimental determinations, I will concentrate in this talk on the theoretical progresses, coming in particular from lattice QCD calculations. These results lead to the estimate |V_us|=0.2250 +- 0.0021, in good agreement with the expectation based on the determination of |V_ud| and the unitarity of the CKM matrix.

[ { "version": "v1", "created": "Thu, 26 May 2005 09:03:54 GMT" } ]

2007-05-23T00:00:00

[ [ "Lubicz", "Vittorio", "" ] ]

quant-ph/0310137

Andrew Scott

A. J. Scott

Multipartite entanglement, quantum-error-correcting codes, and entangling power of quantum evolutions

13 pages, 1 figure

Phys. Rev. A 69, 052330 (2004)

10.1103/PhysRevA.69.052330

null

quant-ph

null

We investigate the average bipartite entanglement, over all possible divisions of a multipartite system, as a useful measure of multipartite entanglement. We expose a connection between such measures and quantum-error-correcting codes by deriving a formula relating the weight distribution of the code to the average entanglement of encoded states. Multipartite entangling power of quantum evolutions is also investigated.

[ { "version": "v1", "created": "Tue, 21 Oct 2003 23:33:49 GMT" }, { "version": "v2", "created": "Tue, 30 Dec 2003 19:55:57 GMT" }, { "version": "v3", "created": "Tue, 27 Jan 2004 01:10:13 GMT" } ]

2007-05-23T00:00:00

[ [ "Scott", "A. J.", "" ] ]

2502.13087

Paolo Grossi

Paolo Grossi and Federico Moretti

An explicit class of Lagrangian surfaces

19 pages, 3 figures. Comments welcome

null

math.AG

http://creativecommons.org/licenses/by-nc-sa/4.0/

We construct a family of general type surfaces with $q=4$, $p_g=6$ and $K^2=24$. These surfaces enjoy some interesting properties: they are Lagrangian in their Albanese variety and their canonical map is $2:1$ onto a degree $12$ surface in $\mathbb P^5$ with $44$ even nodes.

[ { "version": "v1", "created": "Tue, 18 Feb 2025 17:53:12 GMT" } ]

2025-02-19T00:00:00

[ [ "Grossi", "Paolo", "" ], [ "Moretti", "Federico", "" ] ]

1510.03955

Benjamin Ransford

Benjamin Ransford and Luis Ceze

SAP: an Architecture for Selectively Approximate Wireless Communication

null

cs.NI

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Integrity checking is ubiquitous in data networks, but not all network traffic needs integrity protection. Many applications can tolerate slightly damaged data while still working acceptably, trading accuracy versus efficiency to save time and energy. Such applications should be able to receive damaged data if they so desire. In today's network stacks, lower-layer integrity checks discard damaged data regardless of the application's wishes, violating the End-to-End Principle. This paper argues for optional integrity checking and gently redesigns a commodity network architecture to support integrity-unprotected data. Our scheme, called Selective Approximate Protocol (SAP), allows applications to coordinate multiple network layers to accept potentially damaged data. Unlike previous schemes that targeted video or media streaming, SAP is generic. SAP's improved throughput and decreased retransmission rate is a good match for applications in the domain of approximate computing. Implemented atop WiFi as a case study, SAP works with existing physical layers and requires no hardware changes. SAP's benefits increase as channel conditions degrade. In tests of an error-tolerant file-transfer application over WiFi, SAP sped up transmission by about 30% on average.

[ { "version": "v1", "created": "Wed, 14 Oct 2015 03:18:39 GMT" } ]

2015-10-15T00:00:00

[ [ "Ransford", "Benjamin", "" ], [ "Ceze", "Luis", "" ] ]

1509.00620

X. H. Chen

B. Lei, J. H. Cui, Z. J. Xiang, C. Shang, N. Z. Wang, G. J. Ye, X. G. Luo, T. Wu, Z. Sun and X. H. Chen

Evolution of high-temperature superconductivity from low-Tc phase tuned by carrier concentration in FeSe thin flakes

15 pages, 4 figures

Phys. Rev. Lett. 116, 077002 (2016)

10.1103/PhysRevLett.116.077002

null

cond-mat.supr-con cond-mat.str-el

http://arxiv.org/licenses/nonexclusive-distrib/1.0/

In contrast to bulk FeSe superconductor, heavily electron-doped FeSe-derived superconductors show relatively high Tc without hole Fermi surfaces and nodal superconducting gap structure, which pose great challenges on pairing theories in the iron-based superconductors. In the heavily electron-doped FeSe-based superconductors, the dominant factors and the exact working mechanism that is responsible for the high Tc need to be clarified. In particular, a clean control of carrier concentration remains to be a challenge for revealing how superconductivity and Fermi surface topology evolves with carrier concentration in bulk FeSe. Here, we report the evolution of superconductivity in the FeSe thin flake with systematically regulated carrier concentrations by liquid-gating technique. High-temperature superconductivity at 48 K can be achieved only with electron doping tuned by gate voltage in FeSe thin flake with Tc less than 10 K. This is the first time to achieve such a high temperature superconductivity in FeSe without either epitaxial interface or external pressure. It definitely proves that the simple electron-doping process is able to induce high-temperature superconductivity with Tc as high as 48 K in bulk FeSe. Intriguingly, our data also indicates that the superconductivity is suddenly changed from low-Tc phase to high-Tc phase with a Lifshitz transition at certain carrier concentration. These results help us to build a unified picture to understand the high-temperature superconductivity among all FeSe-derived superconductors and shed light on further pursuit of higher Tc in these materials.

[ { "version": "v1", "created": "Wed, 2 Sep 2015 09:53:34 GMT" } ]

2016-02-24T00:00:00

[ [ "Lei", "B.", "" ], [ "Cui", "J. H.", "" ], [ "Xiang", "Z. J.", "" ], [ "Shang", "C.", "" ], [ "Wang", "N. Z.", "" ], [ "Ye", "G. J.", "" ], [ "Luo", "X. G.", "" ], [ "Wu", "T.", "" ], [ "Sun", "Z.", "" ], [ "Chen", "X. H.", "" ] ]