Universal limiting pressure for a three-flavor color superconducting PNJL model phase diagram

TL;DR

This paper investigates the phase diagram of a three-flavor PNJL model, identifying a universal pressure for hadronization and analyzing phase trajectories relevant for heavy-ion collision experiments.

Contribution

It introduces the concept of a universal hadronization pressure to estimate phase boundaries in the PNJL model with color superconductivity.

Findings

Identification of a universal limiting pressure for phase transition.

Observation of coexistence and instability in the phase diagram.

Analysis of entropy trajectories relevant for heavy-ion collisions.

Abstract

The phase diagram of a three-flavor Polyakov-loop Nambu-Jona-Lasinio model is analyzed for the case of isospin symmetric matter with color superconducting phases. The coexistence of chiral symmetry breaking and two-flavor color superconductivity (2SC phase) and a thermodynamic instability due to the implementation of a color neutrality constraint is observed. It is suggested to use a universal hadronization pressure to estimate the phase border between hadronic and quark-gluon plasma phases. Trajectories of constant entropy per baryon are analyzed for conditions appropriate for heavy-ion collisions in the NICA-FAIR energy range.