Polynomial Filtered HMC: An Algorithm for lattice QCD with dynamical quarks
Citation:
Waseem Kamleh and Michael Peardon, Polynomial Filtered HMC: An Algorithm for lattice QCD with dynamical quarks, Computer Physics Communications, 183, 2012, 1993 - 2000Download Item:
Abstract:
Polynomial approximations to the inverse of the fermion matrix are u
sed to filter the dynamics of the upper energy
scales in HMC simulations. The use of a multiple time-scale integration sc
heme allows the filtered pseudofermions to be
evolved using a coarse step size. We introduce a novel generalisatio
n of the nested leapfrog which allows for far greater
flexibility in the choice of time scales. We observe a reduction in the com
putational expense of the molecular dynamics
integration of between 3–5 which improves as the quark mass decre
ases.
Sponsor
Grant Number
Science Foundation Ireland (SFI)
04/BR/P0266
Trinity College Dublin (TCD)
Author's Homepage:
http://people.tcd.ie/peardonmDescription:
PUBLISHED
Author: PEARDON, MICHAEL
Type of material:
Journal ArticleSeries/Report no:
Computer Physics Communications183
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Full text availableKeywords:
High Energy PhysicsDOI:
http://dx.doi.org/10.1016/j.cpc.2012.05.002Metadata
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