Quark number susceptibility and conserved charge fluctuation for (2+1)-flavor QCD with M\"obius domain wall fermions

TL;DR

This paper calculates quark number susceptibilities and charge fluctuations in (2+1)-flavor QCD using M"obius domain wall fermions, comparing results with models and other discretizations across temperature ranges.

Contribution

It provides new lattice QCD results with M"obius domain wall fermions for susceptibilities and fluctuations, and compares them with models and other fermion discretizations.

Findings

Results agree with hadron resonance gas models below transition temperature.

Findings are consistent with perturbation theory at high temperatures.

Leading order Kurtosis results are presented for electric charge and strangeness.

Abstract

We present quark number susceptibilities and conserved charge fluctuations for (2+1)-flavor QCD using M\"obius Domain Wall fermions with a pion mass of \(135~\rm{MeV}\). Our results are compared with hadron resonance gas models below the QCD transition temperature and with \(\mathcal{O}(g^2)\) perturbation theory at high temperatures. Additionally, we compare our findings with results from staggered fermion discretizations. Furthermore, we also present results of leading order Kurtosis of electric charge and strangeness fluctuations.