Dynamical equation of the effective gluon mass
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Dynamical equation of the effective gluon mass

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Dynamical equation of the effective gluon mass

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dc.contributor.author Aguilar, Arlene Cristina
dc.contributor.author Binosi, Daniele
dc.contributor.author Papavassiliou, Joannis
dc.date.accessioned 2015-04-23T07:39:57Z
dc.date.available 2015-04-23T07:39:57Z
dc.date.issued 2011
dc.identifier.uri http://hdl.handle.net/10550/43291
dc.description.abstract In this article we derive the integral equation that controls the momentum dependence of the effective gluon mass in the Landau gauge. This is accomplished by means of a well-defined separation of the corresponding 'one-loop dressed' Schwinger-Dyson equation into two distinct contributions, one associated with the mass and one with the standard kinetic part of the gluon. The entire construction relies on the existence of a longitudinally coupled vertex of nonperturbative origin, which enforces gauge invariance in the presence of a dynamical mass. The specific structure of the resulting mass equation, supplemented by the additional requirement of a positive-definite gluon mass, imposes a rather stringent constraint on the derivative of the gluonic dressing function, which is comfortably satisfied by the large-volume lattice data for the gluon propagator, both for SU(2) and SU(3). The numerical treatment of the mass equation, under some simplifying assumptions, is presented for the aforementioned gauge groups, giving rise to a gluon mass that is a non-monotonic function of the momentum. Various theoretical improvements and possible future directions are briefly discussed.
dc.language.iso eng
dc.relation.ispartof Physical Review D, 2011, vol. 84, num. 8, p. 085026
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Aguilar, Arlene Cristina Binosi, Daniele Papavassiliou, Joannis 2011 Dynamical equation of the effective gluon mass Physical Review D 84 8 085026
dc.subject Física
dc.title Dynamical equation of the effective gluon mass
dc.type info:eu-repo/semantics/article
dc.date.updated 2015-04-23T07:39:57Z
dc.identifier.doi http://dx.doi.org/10.1103/PhysRevD.84.085026
dc.identifier.idgrec 070792

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