Infrared Exponents and the Running Coupling of Landau gauge QCD and their Relation to Confinement

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dc.creatorAlkofer, Reinhard
dc.creatorFischer, Christian S.
dc.creatorvon Smekal, Lorenz
dc.date2002-09-30
dc.date.accessioned2026-07-07T03:48:07Z
dc.date.available2026-07-07T03:48:07Z
dc.descriptionThe infrared behaviour of the gluon and ghost propagators in Landau gauge QCD is reviewed. The Kugo-Ojima confinement criterion and the Gribov-Zwanziger horizon condition result from quite general properties of the ghost Dyson-Schwinger equation. The numerical solutions for the gluon and ghost propagators obtained from a truncated set of Dyson-Schwinger equations provide an explicit example for the anticipated infrared behaviour. The results are in good agreement with corresponding lattice data obtained recently. The resulting running coupling approaches a fix point in the infrared, $α(0) = 8.92/N_c$. Two different fits for the scale dependence of the running coupling are given and discussed.
dc.description3 pages, 3 figures; talk given by R.A. at the conference Quark Nuclear Physics 2002
dc.identifierhttps://arxiv.org/abs/hep-ph/0209366
dc.identifierhttp://arxiv.org/abs/hep-ph/0209366
dc.identifierEur.Phys.J. A17 (2003) 773
dc.identifierdoi:10.1140/epja/i2002-10212-8
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/41880
dc.subjectHigh Energy Physics - Phenomenology
dc.titleInfrared Exponents and the Running Coupling of Landau gauge QCD and their Relation to Confinement
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