Including gravity in equilibrium thermodynamics
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arXiv
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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866909740952453120 |
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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 |