QCD thermodynamics with continuum extrapolated Wilson fermions II

TL;DR

This paper investigates 2+1 flavor QCD thermodynamics using Wilson fermions at multiple pion masses and lattice spacings, analyzing how pseudo-critical temperatures depend on pion mass and comparing results with previous continuum studies.

Contribution

It extends previous work by including additional pion masses and lattice spacings, providing continuum-extrapolated results for Wilson fermions in QCD thermodynamics.

Findings

Light chiral pseudo-critical temperature decreases with lower pion mass.

Strange quark susceptibility and Polyakov loop are less sensitive to pion mass.

Results agree with previous continuum findings in staggered formulation.

Abstract

We continue our investigation of 2+1 flavor QCD thermodynamics using dynamical Wilson fermions in the fixed scale approach. Two additional pion masses, approximately 440 MeV and 285 MeV, are added to our previous work at 545 MeV. The simulations were performed at 3 or 4 lattice spacings at each pion mass. The renormalized chiral condensate, strange quark number susceptibility and Polyakov loop is obtained as a function of the temperature and we observe a decrease in the light chiral pseudo-critical temperature as the pion mass is lowered while the pseudo-critical temperature associated with the strange quark number susceptibility or the Polyakov loop is only mildly sensitive to the pion mass. These findings are in agreement with previous continuum results obtained in the staggered formulation.