The finite temperature phase transition from domain wall fermions

TL;DR

This paper investigates the finite temperature phase transition in QCD using Domain Wall Fermions with DSDR, demonstrating the feasibility of studying chiral symmetry restoration and deconfinement at coarse lattice spacings.

Contribution

It introduces the use of DSDR with DWF at coarse lattices to explore the QCD transition region with small residual chiral symmetry breaking.

Findings

Chiral symmetry restoration occurs near T = 139-195 MeV.

Deconfinement is observed in the same temperature range.

Residual chiral symmetry breaking is minimized at the studied lattice spacings.

Abstract

We present results on the finite temperature QCD transition with 2+1 flavors using Domain Wall Fermions (DWF) with the Dislocation Suppressing Determinant Ratio (DSDR). In particular, we discuss how the use of DSDR allows us to study the finite temperature transition at the coarse lattice spacings corresponding to the transition region (T = 139 - 195 MeV) with DWF at N_\tau = 8. The residual chiral symmetry breaking at these lattice spacings is sufficiently small so that a constant pion mass of m_\pi \approx 200 MeV is obtained in our calculations. The strange quark mass is set to near its physical value. We show results on the restoration of chiral symmetry and deconfinement at finite temperature.