High-accuracy two-loop computation of the critical mass for Wilson fermions

TL;DR

This paper presents a high-precision two-loop calculation of the critical mass for Wilson fermions in lattice QCD using an algebraic coordinate-space method, validated through various infrared regularizations.

Contribution

It introduces an algebraic coordinate-space algorithm for two-loop critical mass computation in lattice QCD, enhancing accuracy and validation methods.

Findings

High-accuracy two-loop critical mass values obtained.

Validation through multiple infrared regularizations.

Demonstrates effectiveness of the coordinate-space method.

Abstract

We test an algebraic algorithm based on the coordinate-space method, evaluating with high accuracy the critical mass for Wilson fermions in lattice QCD at two loops. We test the results by using different types of infrared regularization.