Scaling behavior and positivity violation of the gluon propagator in full QCD

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dc.creatorBowman, Patrick O.
dc.creatorHeller, Urs M.
dc.creatorLeinweber, Derek B.
dc.creatorParappilly, Maria B.
dc.creatorSternbeck, Andre
dc.creatorvon Smekal, Lorenz
dc.creatorWilliams, Anthony G.
dc.creatorZhang, Jianbo
dc.date2007-03-23
dc.date2007-10-22
dc.date.accessioned2026-07-07T11:43:26Z
dc.date.available2026-07-07T11:43:26Z
dc.descriptionThe Landau-gauge gluon propagator is studied using the coarse and fine dynamical MILC configurations. The effects of dynamical quarks are clearly visible and lead to a reduction of the nonperturbative infrared enhancement relative to the quenched case. Lattice spacing effects are studied and found to be small. The gluon spectral function is shown to clearly violate positivity in both quenched and full QCD.
dc.description7 pages, 9 figures. References and 1 figure added, minor text modifications, version to be published in PRD
dc.identifierhttps://arxiv.org/abs/hep-lat/0703022
dc.identifierhttp://arxiv.org/abs/hep-lat/0703022
dc.identifierPhys.Rev.D76:094505,2007
dc.identifierdoi:10.1103/PhysRevD.76.094505
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/201236
dc.subjectHigh Energy Physics - Lattice
dc.titleScaling behavior and positivity violation of the gluon propagator in full QCD
dc.typetext

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