Magnetic susceptibility of the QCD vacuum in a nonlocal SU(3) PNJL model

TL;DR

This paper investigates the magnetic susceptibility of the QCD vacuum using a nonlocal SU(3) PNJL model, estimating quark tensor coefficients and susceptibilities, and compares results with other theories and lattice QCD.

Contribution

It introduces a nonlocal SU(3) PNJL model to analyze QCD vacuum magnetic properties and provides estimates for quark tensor coefficients and susceptibilities.

Findings

Estimated u and s-quark tensor coefficients and susceptibilities.

Results are consistent with other theoretical approaches.

Extended analysis to finite temperature systems.

Abstract

The magnetic susceptibility of the QCD vacuum is analyzed in the framework of a nonlocal SU(3) Polyakov-Nambu-Jona-Lasinio model. Considering two different model parametrizations, we estimate the values of the $u$ and $s$-quark tensor coefficients and magnetic susceptibilities and then we extend the analysis to finite temperature systems. Our numerical results are compared to those obtained in other theoretical approaches and in lattice QCD calculations.