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Gauge-invariant 4-gluon vertex and its ward identity

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dc.contributor.author	Papavassiliou, Joannis
dc.date.accessioned	2015-04-10T07:55:57Z
dc.date.available	2015-04-10T07:55:57Z
dc.date.issued	1993
dc.identifier.citation	Papavassiliou, Joannis 1993 Gauge-invariant 4-gluon vertex and its ward identity Physical Review D 47 10 4728 4738
dc.identifier.uri	http://hdl.handle.net/10550/42980
dc.description.abstract	We use the S-matrix pinch technique to construct at one-loop order a four-gluon vertex for QCD, which is independent of the choice of the gauge parameter, when one or more of the incoming momenta are off shell. We discuss some of the technical subtleties in the application of the pinch technique and show that this vertex satisfies a very simple Ward identity, relating it to a previously constructed gauge-independent three-gluon vertex, also found with the same technique. This analysis serves as a prelude to the construction of an effective potential for QCD, which is gauge-independent order by order in the dressed-loop expansion.
dc.language.iso	eng
dc.relation.ispartof	Physical Review D, 1993, vol. 47, num. 10, p. 4728-4738
dc.subject	Física
dc.title	Gauge-invariant 4-gluon vertex and its ward identity
dc.type	journal article	es_ES
dc.date.updated	2015-04-10T07:55:57Z
dc.identifier.doi	10.1103/PhysRevD.47.4728
dc.identifier.idgrec	091120
dc.rights.accessRights	open access	es_ES