Thermodynamically consistent treatment of repulsive corrections in HRG
High Energy Physics - Phenomenology
2026-02-26 v2 Nuclear Theory
Abstract
We reformulate the treatment of density-dependent chemical potential shifts appearing in excluded-volume implementations of the hadron resonance gas model. An auxiliary classical representation is constructed in which a common energy shift is determined by preserving the scalar number density, ensuring thermodynamic consistency. Hadron radii are parametrized through a liquid-drop inspired mass-radius relation with two parameters: the pion radius and a scaling exponent. The resulting framework reproduces lattice QCD results for lower-order conserved-charge susceptibilities at zero chemical potentials with only two adjustable parameters.
Keywords
Cite
@article{arxiv.2602.19821,
title = {Thermodynamically consistent treatment of repulsive corrections in HRG},
author = {Somenath Pal},
journal= {arXiv preprint arXiv:2602.19821},
year = {2026}
}
Comments
7 pages, 5 figures