Non-perturbative Propagators, Running Coupling and Dynamical Quark Mass of Landau gauge QCD

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dc.creatorFischer, Christian S.
dc.creatorAlkofer, Reinhard
dc.date2003-01-14
dc.date2003-03-25
dc.date.accessioned2026-07-07T10:33:14Z
dc.date.available2026-07-07T10:33:14Z
dc.descriptionThe coupled system of renormalized Dyson-Schwinger equations for the quark, gluon and ghost propagators of Landau gauge QCD is solved within truncation schemes. These employ bare as well as non-perturbative ansaetze for the vertices such that the running coupling as well as the quark mass function are independent of the renormalization point. The one-loop anomalous dimensions of all propagators are reproduced. Dynamical chiral symmetry breaking is found, the dynamically generated quark mass agrees well with phenomenological values and corresponding results from lattice calculations. The effects of unquenching the system are small. In particular the infrared behavior of the ghost and gluon dressing functions found in previous studies is almost unchanged as long as the number of light flavors is smaller than four.
dc.description34 pages, 10 figures, version to be published by Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/hep-ph/0301094
dc.identifierhttp://arxiv.org/abs/hep-ph/0301094
dc.identifierPhys.Rev.D67:094020,2003
dc.identifierdoi:10.1103/PhysRevD.67.094020
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/179037
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Lattice
dc.subjectNuclear Theory
dc.titleNon-perturbative Propagators, Running Coupling and Dynamical Quark Mass of Landau gauge QCD
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