Dynamical overlap fermions, results with HMC algorithm

TL;DR

This paper reports on the implementation of a hybrid Monte-Carlo algorithm for simulating dynamical overlap fermions in four-dimensional QCD, focusing on topological sector changes and pion mass dependence of topological susceptibility.

Contribution

It introduces a hybrid Monte-Carlo algorithm tailored for dynamical overlap fermions, addressing fermionic force challenges during topological sector transitions.

Findings

Topological susceptibility dependence on pion mass studied

Results obtained on $6^4$ and $12\cdot 6^3$ lattices

Physical units transformation of results performed

Abstract

We present results of a hybrid Monte-Carlo algorithm for dynamical, $n_f=2$, four-dimensional QCD with overlap fermions. The fermionic force requires careful treatment, when changing topological sectors. The pion mass dependence of the topological susceptibility is studied on $6^4$ and $12\cdot 6^3$ lattices. The results are transformed into physical units.