Holography, degenerate horizons and entropy

Details Holography, degenerate horizons and entropy Holography, degenerate horizons and entropy

1999-11-12

arxiv.org/abs/hep-th/9911091v2

Nucl.Phys. B580 (2000) 311-330

Physics

High Energy Physics

High Energy Physics - Theory

LaTex file, 23 pages, 1 figure; several corrections, to appear in Nucl. Phys. B

Scientific paper

10.1016/S0550-3213(00)00244-3

We show that a realization of the correspondence AdS_2/CFT_1 for near extremal Reissner-Nordstrom black holes in arbitrary dimensional Einstein-Maxwell gravity exactly reproduces, via Cardy's formula, the deviation of the Bekenstein-Hawking entropy from extremality. We also show that this mechanism is valid for Schwarzschild-de Sitter black holes around the degenerate solution dS_2xS^n. These results reinforce the idea that the Bekenstein-Hawking entropy can be derived from symmetry principles.

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