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23 April 2024 |
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Accelerating the Hybrid Monte Carlo algorithm | | A. Ali Khan
; T. Bakeyev
; M. Göckeler
; R. Horsley
; D. Pleiter
; P. Rakow
; A. Schäfer
; G. Schierholz
; H. Stüben
; | | Date: |
28 Mar 2003 | | Journal: | Phys.Lett. B564 (2003) 235-240 | | Subject: | hep-lat | | Affiliation: | the QCDSF Collaboration | | 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. | | Source: | arXiv, hep-lat/0303026 | | Services: | Forum | Review | PDF | Favorites | |
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