Quark properties from the Hadron Resonance Gas

TL;DR

This paper explores how the quark free energy can be derived using a string and Hadron Resonance Gas model below the deconfinement transition, addressing degrees of freedom and string breaking phenomena.

Contribution

It introduces a method to determine quark free energy from the Hadron Resonance Gas model combined with string theory below the phase transition.

Findings

Quark free energy can be extracted from the model

String breaking and avoided crossings are relevant

Identification of degrees of freedom at different temperatures

Abstract

We show how the quark free energy can be determined from a string and the Hadron Resonance Gas model with one heavy quark below the de-confinement phase transition. We discuss the interesting problem of identification of degrees of freedom at increasing temperatures, as well as the relevance of string breaking and avoided crossings.