Polyakov linear-sigma model in mean-field approximation and optimized perturbation theory
High Energy Physics - Phenomenology
2020-03-31 v1 High Energy Physics - Theory
Abstract
We compare results from the Polyakov linear-sigma model (PLSM) in optimized perturbation theory (OPT) with the mean-field approximation (MFA). At finite temperatures and chemical potentials, the chiral condensates and the decofinement order parameters, the thermodynamic pressure, the pseudo-critical temperatures, the subtracted condensates, the second- and high-order moments of various conserved charges (cumulants) obtained in MFA are compared with OPT and also confronted to available lattice QCD simulations. We conclude that when moving from lower- to higher-order moments of various quantum charges, OPT becomes more closer to QCD.
Cite
@article{arxiv.1908.05939,
title = {Polyakov linear-sigma model in mean-field approximation and optimized perturbation theory},
author = {Abdel Nasser Tawfik and Carsten Greiner and Abdel Magied Diab and M. T. Ghoneim and H. Anwer},
journal= {arXiv preprint arXiv:1908.05939},
year = {2020}
}
Comments
15 pages, 8 figures, 1 table, submitted to PRC