Excluded-volume effects for a hadron gas in Yang-Mills theory
Abstract
When the multiplicities of particles produced in heavy-ion collisions are fitted to the hadron-resonance-gas model, excluded-volume effects play a significant role. In this work, we study the impact of such effects on the equation of state of pure Yang-Mills theory at low temperatures, comparing the predictions of the statistical model with lattice results. In particular, we present a detailed analysis of the SU(2) and SU(3) Yang-Mills theories: we find that, for both of them, the best fits to the equilibrium thermodynamic quantities are obtained when one assumes that the volume of different glueball states is inversely proportional to their mass. The implications of these findings for QCD are discussed.
Keywords
Cite
@article{arxiv.1611.05872,
title = {Excluded-volume effects for a hadron gas in Yang-Mills theory},
author = {Paolo Alba and Wanda Maria Alberico and Alessandro Nada and Marco Panero and Horst Stöcker},
journal= {arXiv preprint arXiv:1611.05872},
year = {2017}
}
Comments
1+24 pages, 4 pdf figures; v2 (1+23 pages, 4 pdf figures): discussion of the lattice setup shortened, comparison with previous work refined, discussion extended: version published in the journal