Topological susceptibility with three flavors of staggered quarks

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dc.creatorAubin, C.
dc.creatorBernard, C.
dc.creatorBilleter, Brian
dc.creatorDeTar, C.
dc.creatorGottlieb, Steven
dc.creatorGregory, E.
dc.creatorHeller, U. M.
dc.creatorHetrick, J. E.
dc.creatorOsborn, J.
dc.creatorSugar, R. L.
dc.creatorToussaint, D.
dc.date2004-09-13
dc.date.accessioned2026-07-07T11:30:49Z
dc.date.available2026-07-07T11:30:49Z
dc.descriptionAs one test of the validity of the staggered-fermion fourth-root determinant trick, we examine the suppression of the topological susceptibility of the QCD vacuum in the limit of small quark mass. The suppression is sensitive to the number of light sea quark flavors. Our study is done in the presence of 2+1 flavors of dynamical quarks in the improved staggered fermion formulation. Variance-reduction techniques provide better control of statistical errors. New results from staggered chiral perturbation theory account for taste-breaking effects in the low-quark mass behavior of the susceptibility, thereby reducing scaling violations from this source. Measurements over a range of quark masses at two lattice spacings permit a rough continuum extrapolation to remove the remaining lattice artifacts. The results are consistent with chiral perturbation theory with the correct flavor counting.
dc.descriptionLattice2004(topology)
dc.identifierhttps://arxiv.org/abs/hep-lat/0409051
dc.identifierhttp://arxiv.org/abs/hep-lat/0409051
dc.identifierNucl.Phys.Proc.Suppl.140:600-602,2005
dc.identifierdoi:10.1016/j.nuclphysbps.2004.11.344
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/197092
dc.subjectHigh Energy Physics - Lattice
dc.titleTopological susceptibility with three flavors of staggered quarks
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