Correlation between conserved charges in PNJL Model with multi-quark interactions

TL;DR

This paper investigates correlations among conserved charges in the 2+1 flavor PNJL model with multi-quark interactions, comparing results with lattice QCD and discussing implications for heavy-ion collision matter.

Contribution

It provides a detailed analysis of conserved charge correlations in the PNJL model, including higher-order correlations and comparisons with lattice QCD data.

Findings

Correlations up to second order agree with lattice QCD results.

Higher-order correlations provide insights into the QCD phase structure.

Comparison with unbound potential highlights model differences.

Abstract

We present a study of correlations among conserved charges like baryon number, electric charge and strangeness in the framework of 2+1 flavor Polyakov loop extended Nambu-Jona-Lasinio model at vanishing chemical potentials, up to fourth order. Correlations up to second order have been measured in Lattice QCD which compares well with our estimates given the inherent difference in the pion masses in the two systems. Possible physical implications of these correlations and their importance in understanding the matter obtained in heavy-ion collisions are discussed. We also present comparison of the results with the commonly used unbound effective potential in the quark sector of this model.