paper

The fate of Schwarzschild-de Sitter Black Holes in gravity

arXiv:1602.00485 · doi:10.1142/S0217732316500541

Abstract

The semiclassical effects of antievaporating black holes can be discussed in the framework of gravity. In particular, the Bousso-Hawking-Nojiri-Odinstov antievaporation instability of degenerate Schwarzschild-de Sitter black holes (the so called Nariai space-time) leads to a dynamical increasing of black hole horizon in gravity. This phenomenon causes the following transition: emitting marginally trapped surfaces become space-like surfaces before the effective Bekenstein-Hawking emission time. As a consequence, Bousso-Hawking thermal radiation cannot be emitted in an antievaporating Nariai black hole. Possible implications in cosmology and black hole physics are also discussed.

9 pages, to appear in Mod. Phys. Lett. A

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