Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/4432
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dc.contributor.authorOsipov, A. A.-
dc.contributor.authorHansen, H.-
dc.contributor.authorHiller, B.-
dc.date.accessioned2008-09-01T11:07:01Z-
dc.date.available2008-09-01T11:07:01Z-
dc.date.issued2004en_US
dc.identifier.citationNuclear Physics A. 745:1-2 (2004) 81-103en_US
dc.identifier.urihttp://hdl.handle.net/10316/4432-
dc.description.abstractThis work is a follow up of recent investigations, where we study the implications of a generalized heat kernel expansion, constructed to incorporate non-perturbatively the effects of a non-commutative quark mass matrix in a fully covariant way at each order of the expansion. As underlying Lagrangian we use the Nambu-Jona-Lasinio model of QCD, with SUf(3) and UA(1) breaking, the latter generated by the 't Hooft flavour determinant interaction. The associated bosonized Lagrangian is derived in leading stationary phase approximation (SPA) and up to second order in the generalized heat kernel expansion. Its symmetry breaking pattern is shown to have a complex structure, involving all powers of the mesonic fields allowed by symmetry. The considered Lagrangian yields a reliable playground for the study of the implications of symmetry and vacuum structure on the mesonic spectra, which we evaluate for the scalar and pseudoscalar meson nonets and compare with other approaches and experiment.en_US
dc.description.urihttp://www.sciencedirect.com/science/article/B6TVB-4DCD653-1/1/a2918866d80174b819c2dacf677556b6en_US
dc.format.mimetypeaplication/PDFen
dc.language.isoengeng
dc.rightsopenAccesseng
dc.titleLong distance expansion for the NJL model with SU(3) and UA(1) breakingen_US
dc.typearticleen_US
dc.identifier.doi10.1016/j.nuclphysa.2004.08.022-
item.fulltextCom Texto completo-
item.languageiso639-1en-
item.grantfulltextopen-
crisitem.author.orcid0000-0002-2622-8789-
Appears in Collections:FCTUC Física - Artigos em Revistas Internacionais
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