Dynamical overlap fermions, results with hybrid Monte-Carlo algorithm

TL;DR

This paper explores the implementation of a hybrid Monte-Carlo algorithm for simulating two-flavor QCD with overlap fermions, highlighting the increased computational demands compared to traditional methods.

Contribution

It provides initial results demonstrating the feasibility of dynamical overlap fermion simulations using hybrid Monte-Carlo, a less common approach in lattice QCD.

Findings

Computational cost is about 100 times higher than Wilson or staggered fermions.

First exploratory results for dynamical overlap fermions using hybrid Monte-Carlo.

Feasibility of simulating dynamical overlap fermions demonstrated.

Abstract

We present first, exploratory results of a hybrid Monte-Carlo algorithm for dynamical, n_f=2, four-dimensional QCD with overlap fermions. As expected, the computational requirements are typically two orders of magnitude larger for the dynamical overlap formalism than for the more conventional (Wilson or staggered) formulations.