Schwarzschild-de Sitter black hole from entropic viewpoint

Details Schwarzschild-de Sitter black hole from entropic viewpoint Schwarzschild-de Sitter black hole from entropic viewpoint

2010-11-17

arxiv.org/abs/1011.3960v3

Mod.Phys.Lett.A26:1975-1983,2011

Physics

High Energy Physics

High Energy Physics - Theory

10 pages, 4 figures, the format of figure 2 changed to prevent printing delay

Scientific paper

10.1142/S0217732311036450

In a Schwarzschild-de Sitter space, we consider an equipotential surface which consists of two holographic screens. Adapting the Bousso-Hawking's reference point of vanishing force, we divide the space into two regions, which are from the reference point to each holographic screen. These two regions can be treated as independent thermodynamical systems, because the Bousso-Hawking reference point with zero temperature behaves like a thermally insulating wall. The entropy obtained in this way agrees with the conventional results; i) when the holographic screens lie at the black hole and cosmological horizons, ii) in the Nariai limit.

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