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https://hdl.handle.net/2440/74371
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Type: | Journal article |
Title: | Polynomial filtered HMC - An algorithm for lattice QCD with dynamical quarks |
Author: | Kamleh, W. Peardon, M. |
Citation: | Computer Physics Communications, 2012; 183(9):1993-2000 |
Publisher: | Elsevier Science BV |
Issue Date: | 2012 |
ISSN: | 0010-4655 1879-2944 |
Statement of Responsibility: | Waseem Kamleh, Mike Peardon |
Abstract: | Polynomial approximations to the inverse of the fermion matrix are used to filter the dynamics of the upper energy scales in Hybrid Monte Carlo (HMC) simulations. The use of a multiple time-scale integration scheme then allows the filtered pseudofermions to be evolved using a coarse step size. The algorithm is applied to Nf=2 flavour simulations at two different quark masses. Polynomial filtering yields a reduction in the computational expense of the molecular dynamics integration of between three- and fivefold when compared to standard HMC. Significantly, the observed speedup is better at the lower quark mass. © 2012 Elsevier B.V. All rights reserved. |
Keywords: | Lattice QCD Hybrid Monte Carlo Algorithms |
Rights: | Crown Copyright © 2012 Published by Elsevier B.V. All rights reserved. |
DOI: | 10.1016/j.cpc.2012.05.002 |
Published version: | http://dx.doi.org/10.1016/j.cpc.2012.05.002 |
Appears in Collections: | Aurora harvest 4 Physics publications |
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