Accelerating the Hybrid Monte Carlo algorithm

Preprint

28 March 2003

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-lat/0303026

Abstract

An algorithm for separating the high- and low-frequency molecular dynamics modes in Hybrid Monte Carlo simulations of gauge theories with dynamical fermions is presented. The separation is based on splitting the pseudo-fermion action into two parts, as was initially proposed by Hasenbusch. We propose to introduce different evolution time-scales for each part. We test our proposal in realistic simulations of two-flavor O(a) improved Wilson fermions. A speed-up of more than a factor of three compared to the standard HMC algorithm is observed in a typical run.

Keywords

MONTE CARLO SIMULATIONS
MOLECULAR DYNAMICS
HYBRID MONTE CARLO
CARLO ALGORITHM
EVOLUTION
FERMIONS

All Related Versions

Version 1, 2003-03-28, ArXiv
Published version: Physics Letters B, 564 (3-4), 235.

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