Inhomogeneous phases in nonlocal chiral quark models

TL;DR

This paper investigates inhomogeneous phases in the QCD phase diagram using nonlocal chiral quark models with Gaussian form factors, comparing results with NJL and quark-meson models to understand their phase structure.

Contribution

It introduces a detailed analysis of inhomogeneous phases in nonlocal chiral quark models and compares phase diagrams with other established models.

Findings

Inhomogeneous phases are present in the nonlocal chiral quark models.

Phase diagrams differ from local models like NJL.

Gaussian form factors influence the structure of the phase diagram.

Abstract

The presence of inhomogeneous phases in the QCD phase diagram is analyzed within chiral quark models that include nonlocal interactions. We work at the mean field level, assuming that the spatial dependence of scalar and pseudo-scalar condensates is given by a dual chiral density wave. Phase diagrams for Gaussian nonlocal form factors are studied in detail and compared with those obtained within the Nambu-Jona-Lasinio model and quark-meson approaches.