Lattice QCD with dynamical domain wall quarks

TL;DR

This paper demonstrates that lattice QCD with dynamical domain wall quarks can preserve chiral symmetry effectively at high lattice cutoffs, using optimized actions and improved simulation techniques.

Contribution

It introduces renormalization group motivated actions and two new steps to enhance hybrid Monte Carlo simulation performance in lattice QCD.

Findings

Chiral symmetry preserved at a^{-1} ~ 2 GeV with small fifth dimension

Improved hybrid Monte Carlo simulation efficiency

Effective use of domain wall quarks in lattice QCD

Abstract

We study lattice QCD with two flavors of dynamical domain wall quarks. With renormalization group motivated actions, we find chiral symmetry can be preserved to a high degree at lattice cut off of a^{-1} \sim 2 GeV even for fifth dimension size as small as L_s = 12. In addition two new steps are introduced to improve the performance of the hybrid Monte Carlo simulation.