Use of stochastic sources for the lattice determination of light quark physics

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dc.creatorBoyle, P. A.
dc.creatorJuttner, A.
dc.creatorKelly, C.
dc.creatorKenway, R. D.
dc.date2008-04-09
dc.date2009-04-16
dc.date.accessioned2026-07-07T13:04:03Z
dc.date.available2026-07-07T13:04:03Z
dc.descriptionIn this paper we investigate the benefits of using Z(2)xZ(2) single timeslice stochastic sources for the calculation of light quark physics on the lattice. Meson 2-point correlators measured using sources stochastic in only spin and those stochastic in both spin and colour indices are compared to point source correlators on the unit gauge and on a 16^3 x 32 Domain Wall QCD ensemble. It is found that the use of stochastic sources gives a considerable improvement in statistics for the same computational cost. The neutral kaon mixing matrix element B_K is also calculated on this ensemble with stochastic sources, but we conclude that the stochastic method offers no significant advantage over the traditional gauge-fixed wall source approach which already offers an exact volume average. We also discuss the application to semileptonic form factors in conjunction with partially twisted boundary conditions.
dc.description26 pages, 7 figures. Version accepted by JHEP
dc.identifierhttps://arxiv.org/abs/0804.1501
dc.identifierhttp://arxiv.org/abs/0804.1501
dc.identifierJHEP0808:086,2008
dc.identifierdoi:10.1088/1126-6708/2008/08/086
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/227023
dc.subjectHigh Energy Physics - Lattice
dc.titleUse of stochastic sources for the lattice determination of light quark physics
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