Gluon mass generation without seagull divergences
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Gluon mass generation without seagull divergences

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Gluon mass generation without seagull divergences

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dc.contributor.author Aguilar, Arlene Cristina
dc.contributor.author Papavassiliou, Joannis
dc.date.accessioned 2015-04-23T07:20:15Z
dc.date.available 2015-04-23T07:20:15Z
dc.date.issued 2010
dc.identifier.uri http://hdl.handle.net/10550/43285
dc.description.abstract Dynamical gluon mass generation has been traditionally plagued with seagull divergences, and all regularization procedures proposed over the years yield finite but scheme-dependent gluon masses. In this work we show how such divergences can be eliminated completely by virtue of a characteristic identity, valid in dimensional regularization. The ability to trigger the aforementioned identity hinges crucially on the particular Ansatz employed for the three-gluon vertex entering into the Schwinger-Dyson equation governing the gluon propagator. The use of the appropriate three-gluon vertex brings about an additional advantage: one obtains two separate (but coupled) integral equations, one for the effective charge and one for the gluon mass. This system of integral equations has a unique solution, which unambiguously determines these two quantities. Most notably, the effective charge freezes in the infrared, and the gluon mass displays power-law running in the ultraviolet, in agreement with earlier considerations.
dc.language.iso eng
dc.relation.ispartof Physical Review D, 2010, vol. 81, num. 3, p. 034003
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Aguilar, Arlene Cristina Papavassiliou, Joannis 2010 Gluon mass generation without seagull divergences Physical Review D 81 3 034003
dc.subject Física
dc.title Gluon mass generation without seagull divergences
dc.type info:eu-repo/semantics/article
dc.date.updated 2015-04-23T07:20:15Z
dc.identifier.doi http://dx.doi.org/10.1103/PhysRevD.81.034003
dc.identifier.idgrec 062073

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