Parallel tempering and decorrelation of topological charge in full QCD

TL;DR

This paper explores enhancing full QCD simulations with dynamical Wilson fermions by integrating parallel tempering into the Hybrid Monte Carlo algorithm, focusing on improving topological charge decorrelation.

Contribution

It introduces a combined approach of parallel tempering with Hybrid Monte Carlo to improve decorrelation of topological charge in full QCD simulations.

Findings

Parallel tempering improves topological charge decorrelation.

Effective on $10^4$ and $12^4$ lattices.

Enhances simulation efficiency for dynamical Wilson fermions.

Abstract

The improvement of simulations of QCD with dynamical Wilson fermions by combining the Hybrid Monte Carlo algorithm with parallel tempering is studied on $10^4$ and $12^4$ lattices. As an indicator for decorrelation the topological charge is used.