The finite temperature QCD phase transition with domain wall fermions

TL;DR

This study explores the use of domain wall fermions in lattice QCD simulations at finite temperature, demonstrating promising chiral symmetry properties near the phase transition.

Contribution

It is the first attempt to apply domain wall fermions to finite temperature QCD, showing their potential for accurate chiral symmetry preservation.

Findings

Observed expected temperature dependence of Wilson line and chiral condensate.

Chiral properties of the condensate are well-preserved with domain wall fermions.

Indications that domain wall fermions are effective for finite temperature QCD studies.

Abstract

The domain wall formulation of lattice fermions is expected to support accurate chiral symmetry, even at finite lattice spacing. Here we attempt to use this new fermion formulation to simulate two-flavor, finite temperature QCD near the chiral phase transition. In this initial study, a variety of quark masses, domain wall heights and domain wall separations are explored using an 8^3 x 4 lattice. Both the expectation value of the Wilson line and the chiral condensate show the temperature dependence expected for the QCD phase transition. Further, the desired chiral properties are seen for the chiral condensate, suggesting that the domain wall fermion formulation may be an effective approach for the numerical study of QCD at finite temperature.