Plasmons, plasminos and Landau damping in a quasiparticle model of the quark-gluon plasma

TL;DR

This paper reviews a quasiparticle model of the quark-gluon plasma, focusing on collective excitations and damping effects, and demonstrates how thermodynamic quantities can be extended to nonzero chemical potential.

Contribution

It introduces a method to extend thermodynamic bulk quantities from zero to nonzero chemical potential using consistency and stationarity conditions.

Findings

Thermodynamic quantities can be mapped to nonzero chemical potential.

Plasmons, plasminos, and Landau damping effects are significant.

Comparison with lattice QCD results validates the model.

Abstract

A phenomenological quasiparticle model is surveyed for 2+1 quark flavors and compared with recent lattice QCD results. Emphasis is devoted to the effects of plasmons, plasminos and Landau damping. It is shown that thermodynamic bulk quantities, known at zero chemical potential, can uniquely be mapped towards nonzero chemical potential by means of a thermodynamic consistency condition and a stationarity condition.