The influence of fluctuations on thermodynamics near chiral phase transition

TL;DR

This paper investigates how fluctuations affect thermodynamic properties near the chiral phase transition using a Polyakov loop extended quark-meson model and the functional renormalization group method, emphasizing phase diagram features and baryon fluctuations.

Contribution

It introduces a self-consistent inclusion of gluon fields in the FRG flow equations within the model, advancing the understanding of fluctuation effects near the transition.

Findings

Fluctuations significantly influence the phase diagram structure.

Net-baryon number fluctuations are enhanced near the transition.

The model provides insights into the critical behavior of QCD matter.

Abstract

We discuss the influence of fluctuations on thermodynamics near the chiral phase transition within Polyakov loop extended quark--meson model based on the functional renormalization group (FRG) method. We include the gluon fields in the FRG flow equation self-consistently on the mean-field level. We focus on the properties of the phase diagram and net-baryon number fluctuations.