Accelerating Staggered Fermion Dynamics with the Rational Hybrid Monte Carlo (RHMC) Algorithm
High Energy Physics - Lattice
2008-11-26 v2
Abstract
Improved staggered fermion formulations are a popular choice for lattice QCD calculations. Historically, the algorithm used for such calculations has been the inexact R algorithm, which has systematic errors that only vanish as the square of the integration step-size. We describe how the exact Rational Hybrid Monte Carlo (RHMC) algorithm may be used in this context, and show that for parameters corresponding to current state-of-the-art computations it leads to a factor of approximately seven decrease in cost as well as having no step-size errors.
Cite
@article{arxiv.hep-lat/0610047,
title = {Accelerating Staggered Fermion Dynamics with the Rational Hybrid Monte Carlo (RHMC) Algorithm},
author = {M. A. Clark and A. D. Kennedy},
journal= {arXiv preprint arXiv:hep-lat/0610047},
year = {2008}
}
Comments
4 pages, 2 figures, 1 table