Criticality in a hadron resonance gas model with the van der Waals interaction

Abstract

The van der Waals interaction is implemented in a hadron resonance gas model. It is shown that this model can describe lattice QCD data of different thermodynamical quantities satisfactorily with the van der Waals parameters a=1250±150 MeV fm3 and r=0.7±0.05 fm. Further, a liquid-gas phase transition is observed in this model with the critical point at temperature, T=62.1 MeV and baryon chemical potential, μB=708 MeV.