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Circumventing the black hole hair-loss problem

Peng Cheng
(
- Tianjin U. and
- Lanzhou U. (main)
)

Aug 15, 2023

6 pages

Published in:

Phys.Rev.D 108 (2023) 6, 066014

Published: Sep 15, 2023

e-Print:

2308.08095 [hep-th]

DOI:

10.1103/PhysRevD.108.066014 (publication)

View in:

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Abstract: (APS)

We provide a possible way of avoiding the hair-loss problem by studying gauge fluctuations on classical Schwarzschild black hole background. The hair-loss problem arises due to the small fidelity of reconstructing the interior operator at the end stage of the evaporation, which is general in most schemes trying to decouple the early and late radiation to avoid firewall. To circumvent the problem, we put the black hole in a cavity as a toy model and study the entropy behavior of the system with different temperatures. By analyzing gauge fluctuations with nontrivial boundary conditions, we find that the entropy of the black hole system increases at the end stage, rather than directly dropping to zero. Besides the end stage, the entropy is the same as Page’s original argument. The hair-loss problem can be avoided by the proposed model and we can gain important insights into the end stage of the evaporation and quantum effects of gravity.

Note:

6 pages, 3 figures, Matches version accepted for publication in PRD

black hole: entropy
effect: quantum
black hole: background
gravitation: effect
black hole: Schwarzschild
fluctuation
evaporation
temperature
decoupling
cavity

References(47)

Figures(4)

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