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Breit-Wigner formalism for non-Abelian theories

Repositori DSpace/Manakin

dc.contributor.author	Papavassiliou, Joannis
dc.date.accessioned	2015-04-10T08:30:05Z
dc.date.available	2015-04-10T08:30:05Z
dc.date.issued	2003
dc.identifier.citation	Papavassiliou, Joannis 2003 Breit-Wigner formalism for non-Abelian theories Journal of Physics G-Nuclear and Particle Physics 29 1 153 159
dc.identifier.uri	http://hdl.handle.net/10550/43008
dc.description.abstract	The consistent description of resonant transition amplitudes within the framework of perturbative field theories necessitates the definition and resummation of off-shell Green's functions, which must respect several crucial physical requirements. In particular, the generalization of the usual Breit-Wigner formalism in a non-Abelian context constitutes a highly non-trivial problem, related to the fact that the conventionally defined Green's functions are unphysical. We briefly review the main field-theoretical difficulties arising when attempting to use such Green's functions outside the confines of a fixed order perturbative calculation, and explain how this task has been successfully accomplished in the framework of the pinch technique.
dc.language.iso	eng
dc.relation.ispartof	Journal of Physics G-Nuclear and Particle Physics, 2003, vol. 29, num. 1, p. 153-159
dc.subject	Física
dc.title	Breit-Wigner formalism for non-Abelian theories
dc.type	journal article	es_ES
dc.date.updated	2015-04-10T08:30:05Z
dc.identifier.doi	10.1088/0954-3899/29/1/316
dc.identifier.idgrec	091149
dc.rights.accessRights	open access	es_ES