Critical endpoint in the continuum limit and critical endline at $N_{\rm T}=6$ of the finite temperature phase transition of QCD with clover fermions

TL;DR

This study identifies the critical endpoints of the finite temperature phase transition in QCD using improved lattice actions, providing continuum extrapolation results for the critical endpoint at specific lattice parameters.

Contribution

It presents a novel determination of the critical endpoint and endline in QCD with Wilson-clover fermions at finite temperature, including continuum limit analysis.

Findings

Critical endpoint determined at specific lattice parameters.

Critical endline at N_T=6 established.

Continuum extrapolation of the critical endpoint performed.

Abstract

We investigate the critical endpoints of the finite temperature phase transition of QCD at zero chemical potential. We employ the renormalization-group improved Iwasaki gauge action and non-perturbatively O(a)-improved Wilson-clover fermion action. The critical endpoints are determined by using the intersection point of kurtosis, employing the multi-parameter, multi-ensemble reweighting method. We present results for the critical endline at $N_{\rm T}$ = 6 and the continuum extrapolation for the critical endpoint of the SU(3)-flavor symmetric point.