Holography of Charged Dilaton Black Holes in General Dimensions
Abstract
The study examines charged dilaton black holes in higher-dimensional spacetime, focusing on their thermodynamics, AC conductivity, and Gauss-Bonnet corrections to the ratio of shear viscosity to entropy density.
We study several aspects of charged dilaton black holes with planar symmetry in (d+2)-dimensional spacetime, generalizing the four-dimensional results investigated in arXiv:0911.3586 [hep-th]. We revisit the exact solutions with both zero and finite temperature and discuss the thermodynamics of the near-extremal black holes. We calculate the AC conductivity in the zero-temperature background by solving the corresponding Schr\"{o}dinger equation and find that the AC conductivity behaves like omega^{delta}, where the exponent delta is determined by the dilaton coupling alpha and the spacetime dimension parameter d. Moreover, we also study the Gauss-Bonnet corrections to eta/s in a five-dimensional finite-temperature background.
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