Improving Dynamical Domain-Wall Fermion Simulations

TL;DR

This paper investigates how using the DBW2 gauge action with dynamical domain wall fermions reduces chiral symmetry breaking, enhancing the accuracy of QCD simulations at various couplings.

Contribution

It demonstrates that the DBW2 gauge action significantly improves chiral symmetry properties in dynamical fermion simulations, enabling more precise studies of QCD thermodynamics.

Findings

DBW2 action reduces residual chiral symmetry breaking

Improved chiral properties at stronger couplings

Potential for more accurate QCD thermodynamics studies

Abstract

We report on studies of the chiral properties of dynamical domain wall fermions combined with the DBW2 gauge action for different gauge couplings and fermion masses. For quenched theories, the DBW2 action gives a residual chiral symmetry breaking much smaller than what was found with more traditional choices for the gauge action. Our goal is to investigate the possibilities which this and further improvements provide for the study of QCD thermodynamics and other simulations at stronger couplings.