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Gauge-invariant proper self-energies and vertices in gauge-theories with broken symmetry
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Gauge-invariant proper self-energies and vertices in gauge-theories with broken symmetry
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| dc.contributor.author | Papavassiliou, Joannis | |
| dc.date.accessioned | 2015-04-10T07:54:10Z | |
| dc.date.available | 2015-04-10T07:54:10Z | |
| dc.date.issued | 1990 | |
| dc.identifier.citation | Papavassiliou, Joannis 1990 Gauge-invariant proper self-energies and vertices in gauge-theories with broken symmetry Physical Review D 41 10 3179 3191 | |
| dc.identifier.uri | http://hdl.handle.net/10550/42978 | |
| dc.description.abstract | Using the pinch technique, we show how to recover, from the S matrix of a spontaneously broken non-Abelian gauge theory, proper self-energies and vertices which are fully gauge invariant when one or more momenta are off shell. Explicit calculations are carried out at the one-loop level for gauge-boson self-energies and fermion-gauge-boson vertices in a simple SU(2) gauge theory with a Higgs boson. The same technique allows us to calculate, at one-loop order, a neutrino electromagnetic form factor which is gauge invariant at all photon momenta, thus resolving a long-standing problem. We show how massless Goldstone bosons, not present in the S matrix, must be introduced into Green's functions in order to reconcile gauge invariance and renormalizability. | |
| dc.language.iso | eng | |
| dc.relation.ispartof | Physical Review D, 1990, vol. 41, num. 10, p. 3179-3191 | |
| dc.subject | Física | |
| dc.title | Gauge-invariant proper self-energies and vertices in gauge-theories with broken symmetry | |
| dc.type | journal article | es_ES |
| dc.date.updated | 2015-04-10T07:54:10Z | |
| dc.identifier.doi | 10.1103/PhysRevD.41.3179 | |
| dc.identifier.idgrec | 091116 | |
| dc.rights.accessRights | open access | es_ES |
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