Influence of the isospin and hypercharge chemical potentials on the location of the CEP in the mu_B-T phase diagram of the SU(3)_L x SU(3)_R chiral quark model

TL;DR

This paper explores how isospin and hypercharge chemical potentials affect the location of the critical end point in the phase diagram of a chiral quark model, considering asymmetric quark matter and using advanced theoretical methods.

Contribution

It introduces a detailed analysis of chemical potential effects on the phase diagram of the SU(3) chiral quark model at one-loop level with optimized perturbation theory.

Findings

Chemical potentials shift the CEP location in the phase diagram.

Asymmetric quark matter influences quasiparticle masses.

Temperature dependence of topological susceptibility is estimated.

Abstract

We investigate the influence of the asymmetric quark matter (rho_u\ne rho_d\ne rho_s) on the mass of the quasiparticles and the phase diagram of the chiral quark model parametrized at one-loop level of the renormalized theory, using the optimized perturbation theory for the resummation of the perturbative series. The effect of various chemical potentials introduced in the grand canonical ensemble is investigated with the method of relativistic many-body theory. The temperature dependence of the topological susceptibility is estimated with the help of the Witten-Veneziano mass formula.