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Infrared behaviour and fixed points in Landau gauge QCD

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arxiv hep-th/0312324 v1 pith:MVBMBRGU submitted 2003-12-31 hep-th hep-ph

Jan M. Pawlowski , Daniel F. Litim , Sergei Nedelko , Lorenz von Smekal This is my paper · ORCID
classification hep-thhep-ph
keywords infraredgaugelandaubehaviourpropagatorsapproachconfinementdependences
verification ladder T0 review T1 audit T2 compute T3 formal

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We investigate the infrared behaviour of gluon and ghost propagators in Landau gauge QCD by means of an exact renormalisation group equation. We explain how, in general, the infrared momentum structure of Green functions can be extracted within this approach. An optimisation procedure is devised to remove residual regulator dependences. In Landau gauge QCD this framework is used to determine the infrared leading terms of the propagators. The results support the Kugo-Ojima confinement scenario. Possible extensions are discussed.

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Cited by 4 Pith papers

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    At one loop in the Refined Gribov-Zwanziger framework, the quark mass function agrees roughly with lattice QCD after fitting the gluon propagator, but the dressing function disagrees in the infrared.

  4. Gluon mass scale through the Schwinger mechanism

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    A comprehensive review showing how massless composite poles in QCD vertices can generate the gluon mass scale, with a BSE-based computation reaching m=367 MeV against the 354 MeV lattice value.

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