Topological susceptibility in staggered fermion chiral perturbation theory

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dc.creatorBilleter, Brian
dc.creatorDeTar, Carleton
dc.creatorOsborn, James
dc.date2004-06-18
dc.date.accessioned2026-07-07T11:30:47Z
dc.date.available2026-07-07T11:30:47Z
dc.descriptionThe topological susceptibility of the vacuum in quantum chromodynamics has been simulated numerically using the Asqtad improved staggered fermion formalism. At nonzero lattice spacing the residual fermion doublers (fermion ``tastes'') in the staggered fermion formalism give contributions to the susceptibility that deviate from conventional continuum chiral perturbation theory. In this brief report we estimate the taste-breaking artifact and compare it with results of recent simulations, finding that it accounts for roughly half of the scaling violation.
dc.description9 pp., 2 figs., submitted to Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/hep-lat/0406032
dc.identifierhttp://arxiv.org/abs/hep-lat/0406032
dc.identifierPhys.Rev.D70:077502,2004
dc.identifierdoi:10.1103/PhysRevD.70.077502
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/197085
dc.subjectHigh Energy Physics - Lattice
dc.titleTopological susceptibility in staggered fermion chiral perturbation theory
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