Hawking-Rényi black hole thermodynamics, Kiselev solution, and cosmic censorship

Fuente: arXiv
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Auteurs principaux: Czinner, Viktor G., Iguchi, Hideo
Format: Preprint
Publié: 2025
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author Czinner, Viktor G.
Iguchi, Hideo
author_facet Czinner, Viktor G.
Iguchi, Hideo
contents Explicit example, where the Hawking temperature of a black hole horizon is compatible with the black hole's Rényi entropy thermodynamic description, is constructed. It is shown that for every static, spherically symmetric, vacuum black hole space-time, a corresponding black hole solution can be derived, where the Hawking temperature is identical with the Rényi temperature, i.e. the one obtained from the Rényi entropy of the black hole via the 1st law of thermodynamics. In order to have this Hawking-Rényi type thermodynamic property, the black holes must be surrounded by an anisotropic fluid in the form of a Kiselev metric, where the properties of the fluid are uniquely determined by the mass of the black hole, $M$, and the Rényi parameter, λ. In the simplest Schwarzschild scenario, the system is found to be thermodynamically unstable, and the 3rd law of thermodynamics seems to play the role of a cosmic censor via placing an upper bound on the black hole's mass, by which preventing the black hole from loosing its horizon(s).
format Preprint
id arxiv_https___arxiv_org_abs_2504_16705
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Hawking-Rényi black hole thermodynamics, Kiselev solution, and cosmic censorship
Czinner, Viktor G.
Iguchi, Hideo
General Relativity and Quantum Cosmology
Statistical Mechanics
High Energy Physics - Phenomenology
High Energy Physics - Theory
Explicit example, where the Hawking temperature of a black hole horizon is compatible with the black hole's Rényi entropy thermodynamic description, is constructed. It is shown that for every static, spherically symmetric, vacuum black hole space-time, a corresponding black hole solution can be derived, where the Hawking temperature is identical with the Rényi temperature, i.e. the one obtained from the Rényi entropy of the black hole via the 1st law of thermodynamics. In order to have this Hawking-Rényi type thermodynamic property, the black holes must be surrounded by an anisotropic fluid in the form of a Kiselev metric, where the properties of the fluid are uniquely determined by the mass of the black hole, $M$, and the Rényi parameter, λ. In the simplest Schwarzschild scenario, the system is found to be thermodynamically unstable, and the 3rd law of thermodynamics seems to play the role of a cosmic censor via placing an upper bound on the black hole's mass, by which preventing the black hole from loosing its horizon(s).
title Hawking-Rényi black hole thermodynamics, Kiselev solution, and cosmic censorship
topic General Relativity and Quantum Cosmology
Statistical Mechanics
High Energy Physics - Phenomenology
High Energy Physics - Theory
url https://arxiv.org/abs/2504.16705