Supercooling in viscous hydrodynamics for QCD phase transition

TL;DR

This paper investigates how supercooling affects entropy production during the QCD phase transition within viscous hydrodynamics, revealing that supercooling's entropy effects are weakly dependent on viscosity.

Contribution

It introduces a detailed analysis of supercooling effects in viscous hydrodynamics during the QCD phase transition, including the impact on entropy production.

Findings

Supercooling causes excess entropy production.

Viscosity has a weak effect on entropy increase due to supercooling.

The study incorporates the Csernai-Kapusta nucleation model.

Abstract

First order quark hadron phase transition is considered in scaling hydrodynamics including the Csernai-Kapusta model of nucleation of hadronic bubbles leading to supercooling. The effect of viscosity on the entropy production is studied in ideal as well as in viscous hydrodynamics with and without supercooling. It is found that the excess entropy produced due to supercooling depends weakly on viscosity.