Reducing the beta-shift in domain wall fermion simulations

TL;DR

This paper introduces an algorithm to reduce the beta-shift in domain wall fermion simulations, aiming to improve gauge field smoothness by leveraging the relationship between overlap and domain wall fermions.

Contribution

The paper presents a novel algorithm that minimizes the beta-shift in domain wall fermion simulations, aligning its effects with those observed in dynamical overlap fermions.

Findings

The algorithm effectively reduces the beta-shift to overlap fermion levels.

Improved gauge field smoothness observed with the new method.

Potential for enhanced accuracy in lattice QCD simulations.

Abstract

The beta-shift induced from dynamical domain wall quarks leads to increased roughness of the gauge field, thus reversing the effect of smoothing from the gauge action improvement. By exploiting the relation of overlap and domain wall fermions in greater detail,we propose an algorithm which reduces the beta-shift to the level of dynamical overlap fermions.