$g_{tt}g_{rr} =-1$ black hole thermodynamics in extended quasi-topological gravity

Fuente: arXiv
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Main Author: Borissova, Johanna
Format: Preprint
Published: 2026
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author Borissova, Johanna
author_facet Borissova, Johanna
contents We present a unified framework for the discussion of black hole thermodynamics of $d$-dimensional static black holes with spherical, toroidal or compact hyperbolic horizon topology satisfying $g_{tt}g_{rr}=-1$ in Schwarzschild gauge. To that end, we consider any such black hole as a solution to an integrable $2$-dimensional effective dilaton theory and thereby as a vacuum solution to an extended notion of $d$-dimensional quasi-topological gravity. We show that the generating function determining $f(r) = -g_{tt} $ in the integrated equation of motion provides the thermodynamic mass in a generalised first law with entropy computed as the Wald entropy. The framework presented here can be applied to singular and regular black holes with flat or anti-de Sitter asymptotics.
format Preprint
id arxiv_https___arxiv_org_abs_2604_24101
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle $g_{tt}g_{rr} =-1$ black hole thermodynamics in extended quasi-topological gravity
Borissova, Johanna
General Relativity and Quantum Cosmology
High Energy Physics - Theory
We present a unified framework for the discussion of black hole thermodynamics of $d$-dimensional static black holes with spherical, toroidal or compact hyperbolic horizon topology satisfying $g_{tt}g_{rr}=-1$ in Schwarzschild gauge. To that end, we consider any such black hole as a solution to an integrable $2$-dimensional effective dilaton theory and thereby as a vacuum solution to an extended notion of $d$-dimensional quasi-topological gravity. We show that the generating function determining $f(r) = -g_{tt} $ in the integrated equation of motion provides the thermodynamic mass in a generalised first law with entropy computed as the Wald entropy. The framework presented here can be applied to singular and regular black holes with flat or anti-de Sitter asymptotics.
title $g_{tt}g_{rr} =-1$ black hole thermodynamics in extended quasi-topological gravity
topic General Relativity and Quantum Cosmology
High Energy Physics - Theory
url https://arxiv.org/abs/2604.24101