Accelerating staggered-fermion dynamics with the rational hybrid Monte Carlo algorithm
Journal Article
·
· Physical Review. D, Particles Fields
- Center for Computational Sciences, Boston University, 3 Cummington Street, Boston, Massachusetts 02215 (United States)
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.
- OSTI ID:
- 20933192
- Journal Information:
- Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 1 Vol. 75; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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