Including gravity in equilibrium thermodynamics

Fuente: arXiv
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Main Authors: Sourtzinou, Eirini, Anastopoulos, Charis
Format: Preprint
Published: 2025
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author Sourtzinou, Eirini
Anastopoulos, Charis
author_facet Sourtzinou, Eirini
Anastopoulos, Charis
contents This paper is part of a bottom-up approach to gravitational thermodynamics that is guided by the axiomatic frameworks of equilibrium thermodynamics. We identify a novel form of the microcanonical distribution for systems in background gravitational fields that respects the kinetic theory and the thermodynamic symmetries. Thermodynamic consistency dictates the treatment of the gravitational field as a thermodynamic variable. We introduce the thermodynamic conjugate to the gravitational field, the gravitational pull, an additive variable that is a structural element of our microcanonical distribution. We demonstrate the validity of our results to inhomogenous background fields, a class of self-gravitating systems, relativistic gases in Rindler spacetime, and quantum gases.
format Preprint
id arxiv_https___arxiv_org_abs_2508_13061
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Including gravity in equilibrium thermodynamics
Sourtzinou, Eirini
Anastopoulos, Charis
General Relativity and Quantum Cosmology
Statistical Mechanics
This paper is part of a bottom-up approach to gravitational thermodynamics that is guided by the axiomatic frameworks of equilibrium thermodynamics. We identify a novel form of the microcanonical distribution for systems in background gravitational fields that respects the kinetic theory and the thermodynamic symmetries. Thermodynamic consistency dictates the treatment of the gravitational field as a thermodynamic variable. We introduce the thermodynamic conjugate to the gravitational field, the gravitational pull, an additive variable that is a structural element of our microcanonical distribution. We demonstrate the validity of our results to inhomogenous background fields, a class of self-gravitating systems, relativistic gases in Rindler spacetime, and quantum gases.
title Including gravity in equilibrium thermodynamics
topic General Relativity and Quantum Cosmology
Statistical Mechanics
url https://arxiv.org/abs/2508.13061