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SELF-CONSISTENT SOLUTION OF THE SCHWINGER-DYSON EQUATIONS FOR THE NUCLEON AND MESON PROPAGATORS

dc.contributor.authorBracco, M. E.
dc.contributor.authorEiras, A.
dc.contributor.authorKrein, G.
dc.contributor.authorWilets, L.
dc.contributor.institutionUniversity of Washington
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:25:00Z
dc.date.available2014-05-20T15:25:00Z
dc.date.issued1994-03-01
dc.description.abstractThe Schwinger-Dyson equations for the nucleon and meson propagators are solved self-consistently in an approximation that goes beyond the Hartree-Fock approximation. The traditional approach consists in solving the nucleon Schwinger-Dyson equation with bare meson propagators and bare meson-nucleon vertices; the corrections to the meson propagators are calculated using the bare nucleon propagator and bare nucleon-meson vertices. It is known that such an approximation scheme produces the appearance of ghost poles in the propagators. In this paper the coupled system of Schwinger-Dyson equations for the nucleon and the meson propagators are solved self-consistently including vertex corrections. The interplay of self-consistency and vertex corrections on the ghosts problem is investigated. It is found that the self-consistency does not affect significantly the spectral properties of the propagators. In particular, it does not affect the appearance of the ghost poles in the propagators.en
dc.description.affiliationUNIV WASHINGTON,DEPT PHYS,SEATTLE,WA 98195
dc.format.extent1299-1308
dc.identifierhttp://dx.doi.org/10.1103/PhysRevC.49.1299
dc.identifier.citationPhysical Review C. College Pk: American Physical Soc, v. 49, n. 3, p. 1299-1308, 1994.
dc.identifier.doi10.1103/PhysRevC.49.1299
dc.identifier.fileWOSA1994NB79300013.pdf
dc.identifier.issn0556-2813
dc.identifier.urihttp://hdl.handle.net/11449/35486
dc.identifier.wosWOS:A1994NB79300013
dc.language.isoeng
dc.publisherAmerican Physical Soc
dc.relation.ispartofPhysical Review C
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.titleSELF-CONSISTENT SOLUTION OF THE SCHWINGER-DYSON EQUATIONS FOR THE NUCLEON AND MESON PROPAGATORSen
dc.typeArtigo
dcterms.licensehttp://publish.aps.org/authors/transfer-of-copyright-agreement
dcterms.rightsHolderAmerican Physical Soc
dspace.entity.typePublication
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Física Teórica (IFT), São Paulopt

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