Quarkyonic Matter and Chiral Symmetry Breaking

TL;DR

This paper investigates the properties of Quarkyonic Matter in large-Nc QCD using an effective chiral model, exploring its relation to chiral symmetry restoration and deconfinement at various temperatures and densities.

Contribution

It introduces a study of Quarkyonic Matter within an effective chiral model coupled to the Polyakov loop, analyzing its phase transition characteristics and relation to chiral symmetry and deconfinement.

Findings

Quarkyonic transition occurs near the chiral transition density at large Nc.

The property holds at finite temperature below deconfinement temperature.

The study discusses the Nc-dependence of the chiral critical end point.

Abstract

The appearance of a new phase of QCD, Quarkyonic Matter in the limit of large number of colors is studied within Nambu-Jona-Lassinio effective chiral model coupled to the Polyakov loop. The interplay of this novel QCD phase with chiral symmetry restoration and color deconfinement is discussed. We find that at vanishing temperature and at large $N_c$, the quarkyonic transition occurs at densities only slightly lower than that expected for the chiral transition. This property is also shown to be valid at finite temperature if the temperature is less than that of deconfinement. The position and $N_c$-dependence of chiral critical end point is also discussed.