Optimal lattice domain-wall fermions with finite Ns

TL;DR

This paper reviews lattice formulations of vector-like gauge theories using domain-wall fermions and discusses optimizing chiral symmetry at finite fifth-dimensional extent, reducing dependence on lattice spacing.

Contribution

It introduces methods to optimize chiral symmetry for finite N_s and eliminate dependence on the fifth-dimensional lattice spacing a_5.

Findings

Optimized chiral symmetry at finite N_s

Reduced dependence on a_5

Enhanced lattice formulation techniques

Abstract

I review the lattice formulations of vector-like gauge theories (e.g. QCD) with domain-wall fermions, and discuss how to optimize the chiral symmetry for any finite N_s (in the fifth dimension), as well as to eliminate its dependence on a_5.