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Bibliographic Details
Main Authors: Lu, Kai-Peng, Lu, H.
Format: Preprint
Published: 2025
Subjects:
Online Access:https://arxiv.org/abs/2507.17812
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author Lu, Kai-Peng
Lu, H.
author_facet Lu, Kai-Peng
Lu, H.
contents We propose new bounds on black hole entropy in terms of the specific heat at fixed charges. For special spherically-symmetric and static black holes ($g_{tt} g_{rr}=-1$), we prove the bounds with suitable sufficient energy conditions. For more general static and rotating black holes, we test the bounds with a variety of examples. This work extends the previously-known algebraic inequalities of the black hole thermodynamic variables such as the Penrose inequality, to include their derivatives.
format Preprint
id arxiv_https___arxiv_org_abs_2507_17812
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Black Hole Entropy Bounded by the Specific Heat
Lu, Kai-Peng
Lu, H.
General Relativity and Quantum Cosmology
High Energy Physics - Theory
We propose new bounds on black hole entropy in terms of the specific heat at fixed charges. For special spherically-symmetric and static black holes ($g_{tt} g_{rr}=-1$), we prove the bounds with suitable sufficient energy conditions. For more general static and rotating black holes, we test the bounds with a variety of examples. This work extends the previously-known algebraic inequalities of the black hole thermodynamic variables such as the Penrose inequality, to include their derivatives.
title Black Hole Entropy Bounded by the Specific Heat
topic General Relativity and Quantum Cosmology
High Energy Physics - Theory
url https://arxiv.org/abs/2507.17812