Simulating an arbitrary number of flavors of dynamical overlap fermions

TL;DR

This paper introduces new Hybrid Monte Carlo algorithms that efficiently simulate multiple flavors of dynamical overlap fermions, addressing critical slowing down issues in lattice QCD simulations.

Contribution

The paper proposes a set of related algorithms that enable simulation of any number of dynamical overlap fermions using chiral pseudo-fermion fields, improving computational efficiency.

Findings

Reduces critical slowing down in the chiral limit

Effective for sectors with nontrivial topology

Enables simulation of arbitrary flavor numbers

Abstract

We present a set of related Hybrid Monte Carlo methods to simulate an arbitrary number of dynamical overlap fermions. Each fermion is represented by a chiral pseudo-fermion field. The new algorithm reduces critical slowing down in the chiral limit and for sectors of nontrivial topology.