Huge entropy production inside black holes

TL;DR

This paper demonstrates that entropy generated inside charged black holes through Ohmic dissipation can surpass the Bekenstein-Hawking entropy, raising questions about entropy conservation during black hole evaporation.

Contribution

It reveals that internal entropy production in charged black holes can exceed the standard entropy bound, challenging existing thermodynamic assumptions.

Findings

Entropy inside black holes can greatly exceed Bekenstein-Hawking entropy.

Black hole evaporation may lead to apparent entropy loss, violating the second law.

Bousso's covariant entropy bound remains valid despite internal entropy excess.

Abstract

We show that the entropy created by Ohmic dissipation inside an accreting charged black hole may exceed the Bekenstein-Hawking entropy by a large factor. If the black hole subsequently evaporates, radiating only the Bekenstein-Hawking entropy, then the black hole appears to destroy entropy, violating the second law of thermodynamics. A companion paper discusses the implications of this startling result. Bousso's covariant entropy bound is not violated.