Classical QGP : IV. Thermodynamics

TL;DR

This paper develops a comprehensive thermodynamic model for the classical quark-gluon plasma across all coupling strengths, aligning well with lattice data and highlighting the importance of strong coupling near the transition temperature.

Contribution

It introduces a unified equation of state for the classical QGP valid for all coupling regimes, derived from Gibbs relations and validated against lattice simulations.

Findings

The model accurately reproduces lattice results for SU(2) plasma.

Strong coupling effects are significant near T_c.

The classical QGP's strongly coupled component influences bulk thermodynamics.

Abstract

We construct the equation of a state of the classical QGP valid for all values of Gamma=V/K, the ratio of the mean Coulomb to kinetic energy. By enforcing the Gibbs relations, we derive the pertinent pressure and entropy densities for all Gamma. For the case of an SU(2) classical gluonic plasma our results compare well with lattice simulations. We show that the strongly coupled component of the classical QGP contributes significantly to the bulk thermodynamics across T_c.