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Gauge-invariant 3-gluon vertex in QCD
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| dc.contributor.author | Cornwall, John M. | |
| dc.contributor.author | Papavassiliou, Joannis | |
| dc.date.accessioned | 2015-04-10T07:49:06Z | |
| dc.date.available | 2015-04-10T07:49:06Z | |
| dc.date.issued | 1989 | |
| dc.identifier.citation | Cornwall, John M. Papavassiliou, Joannis 1989 Gauge-invariant 3-gluon vertex in QCD Physical Review D 40 10 3474-1 3474-47 | |
| dc.identifier.uri | http://hdl.handle.net/10550/42976 | |
| dc.description.abstract | By resumming the Feynman graphs which contribute to any gauge-invariant process we explicitly construct, at one-loop order, a three-gluon vertex for QCD which is completely independent of the choice of gauge. This vertex satisfies a Ward identity of the type encountered in ghost-free gauges, relating the vertex to the proper self-energy of a previously constructed gluon propagator, also found by resumming graphs; like the vertex, this self-energy is completely gauge invariant. We also derive the gauge-invariant propagator and vertex via a second related technique which minimizes the dependence on embedding these objects in a gauge-invariant process; the same results are found as in the first technique. These results motivate a toy model of the nonlinear Schwinger-Dyson equation satisfied by the exact gauge-invariant three-gluon vertex. This model is nonperturbative and has infrared singularities, which we can remove via gluon mass generation; it shows many interesting features expected of QCD, such as a beta function which is not Borel summable in perturbation theory. | |
| dc.language.iso | eng | |
| dc.relation.ispartof | Physical Review D, 1989, vol. 40, num. 10, p. 3474-1-3474-47 | |
| dc.subject | Física | |
| dc.title | Gauge-invariant 3-gluon vertex in QCD | |
| dc.type | journal article | es_ES |
| dc.date.updated | 2015-04-10T07:49:06Z | |
| dc.identifier.doi | 10.1103/PhysRevD.40.3474 | |
| dc.identifier.idgrec | 091114 | |
| dc.rights.accessRights | open access | es_ES |
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