Thermodynamic Geometry of Classical and Quantum Statistics in the Relativistic Regime

Fuente: arXiv
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Autori principali: Mohammadzadeh, Hosein, Ebadi, Zahra, Monem, Omid Yahyayi, Ardabili, Mohammad Hossein Naghizadeh
Natura: Preprint
Pubblicazione: 2026
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author Mohammadzadeh, Hosein
Ebadi, Zahra
Monem, Omid Yahyayi
Ardabili, Mohammad Hossein Naghizadeh
author_facet Mohammadzadeh, Hosein
Ebadi, Zahra
Monem, Omid Yahyayi
Ardabili, Mohammad Hossein Naghizadeh
contents We investigate the thermodynamic geometry of classical and quantum ideal gases in the relativistic regime, with particular emphasis on the effects of particle mass and spatial dimensionality. Relativistic kinematics is incorporated through the full energy-momentum dispersion relation and the corresponding relativistic density of states. Using the Fisher-Rao information metric derived from the partition function, we analyze the thermodynamic curvature for Maxwell-Boltzmann, Bose-Einstein, and Fermi-Dirac statistics. Exact analytical expressions are obtained in two spatial dimensions, while the three-dimensional case is studied numerically. We show that the thermodynamic curvature preserves its characteristic sign-positive for bosons and negative for fermions; even in the relativistic regime, reflecting effective attractive and repulsive statistical interactions, respectively. A distinctive relativistic effect is the shift of curvature singularities from the non-relativistic critical point to a mass-dependent threshold at $μ=mc^{2}$. In addition, the relativistic Bose-Einstein condensation temperature is evaluated, revealing explicit mass-dependent corrections to the non-relativistic result. These findings provide a unified geometric perspective on relativistic statistical systems and clarify the interplay between quantum statistics, relativistic kinematics, and critical behavior.
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id arxiv_https___arxiv_org_abs_2602_19759
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Thermodynamic Geometry of Classical and Quantum Statistics in the Relativistic Regime
Mohammadzadeh, Hosein
Ebadi, Zahra
Monem, Omid Yahyayi
Ardabili, Mohammad Hossein Naghizadeh
Statistical Mechanics
Quantum Gases
We investigate the thermodynamic geometry of classical and quantum ideal gases in the relativistic regime, with particular emphasis on the effects of particle mass and spatial dimensionality. Relativistic kinematics is incorporated through the full energy-momentum dispersion relation and the corresponding relativistic density of states. Using the Fisher-Rao information metric derived from the partition function, we analyze the thermodynamic curvature for Maxwell-Boltzmann, Bose-Einstein, and Fermi-Dirac statistics. Exact analytical expressions are obtained in two spatial dimensions, while the three-dimensional case is studied numerically. We show that the thermodynamic curvature preserves its characteristic sign-positive for bosons and negative for fermions; even in the relativistic regime, reflecting effective attractive and repulsive statistical interactions, respectively. A distinctive relativistic effect is the shift of curvature singularities from the non-relativistic critical point to a mass-dependent threshold at $μ=mc^{2}$. In addition, the relativistic Bose-Einstein condensation temperature is evaluated, revealing explicit mass-dependent corrections to the non-relativistic result. These findings provide a unified geometric perspective on relativistic statistical systems and clarify the interplay between quantum statistics, relativistic kinematics, and critical behavior.
title Thermodynamic Geometry of Classical and Quantum Statistics in the Relativistic Regime
topic Statistical Mechanics
Quantum Gases
url https://arxiv.org/abs/2602.19759