Polyakov-Nambu-Jona Lasinio model and Color-Flavor-Locked phase of QCD

TL;DR

This paper investigates how the Polyakov loop influences the QCD phase diagram at high density within the PNJL model, highlighting issues with color neutrality and the distortion of the CFL phase.

Contribution

It introduces the impact of the Polyakov loop on the PNJL model at finite density and discusses the resulting effects on color neutrality and the CFL phase.

Findings

Color neutrality is missing in the standard PNJL model at finite density.

The inclusion of the Polyakov loop distorts the color-flavor locked phase.

The study provides insights into the modifications of the QCD phase diagram.

Abstract

The effect of Polyakov loop on the QCD phase diagram at high density is studied within the Nambu-Jona Lasinio model with Polyakov loop (PNJL model). We point out that the color neutrality is missing in the standard PNJL model at finite density. Moreover, we discuss how the color-flavor locked (CFL) phase is to be distorted by the inclusion of Polyakov loop.