Cavitation in a quark gluon plasma with finite chemical potential and several transport coefficients

TL;DR

This paper investigates how finite chemical potential influences cavitation in a quark-gluon plasma using various equations of state and transport coefficients, revealing earlier cavitation at finite chemical potential.

Contribution

It introduces a comparative analysis of cavitation in QGP at finite versus zero chemical potential using multiple equations of state and holographic transport coefficients.

Findings

Cavitation occurs earlier at finite chemical potential.

Transport coefficients from holographic models prevent cavitation.

Different equations of state yield consistent qualitative results.

Abstract

We study the effects of a finite chemical potential on the occurrence of cavitation in a quark gluon plasma (QGP). We solve the evolution equations of second order viscous relativistic hydrodynamics using three different equations of state. The first one was derived in lattice QCD and represents QGP at zero chemical potential. It was previously used in the study of cavitation. The second equation of state also comes from lattice QCD and is a recent parametrization of the QGP at finite chemical potential. The third one is similar to the MIT equation of state with chemical potential and includes nonperturbative effects through the gluon condensates. We conclude that at finite chemical potential cavitation in the QGP occurs earlier than at zero chemical potential. We also consider transport coefficients from a holographic model of a non-conformal QGP at zero chemical potential. In this case cavitation does not occur.