Scaling with a modified Wilson action which suppresses Z_2 artifacts in SU(2) lattice gauge theories

TL;DR

This paper introduces a modified Wilson action that suppresses negative plaquettes to study scaling in SU(2) lattice gauge theories, showing good agreement with two-loop asymptotic results.

Contribution

The paper proposes a new modified Wilson action that reduces Z_2 artifacts, improving the accuracy of scaling behavior analysis in SU(2) lattice gauge theories.

Findings

Good agreement with two-loop asymptotic results using the $_E$ scheme

Suppression of negative plaquettes reduces Z_2 artifacts

Enhanced understanding of string tension scaling

Abstract

A modified Wilson action which suppresses plaquettes which take negative values is used to study the scaling behavior of the string tension. The use of the $\b_E$ scheme gives good agreement with asymptotic two loop results.