SELF-CONSISTENT SOLUTION OF THE SCHWINGER-DYSON EQUATIONS FOR THE NUCLEON AND MESON PROPAGATORS
dc.contributor.author | Bracco, M. E. | |
dc.contributor.author | Eiras, A. | |
dc.contributor.author | Krein, G. | |
dc.contributor.author | Wilets, L. | |
dc.contributor.institution | University of Washington | |
dc.contributor.institution | Universidade Estadual Paulista (Unesp) | |
dc.date.accessioned | 2014-05-20T15:25:00Z | |
dc.date.available | 2014-05-20T15:25:00Z | |
dc.date.issued | 1994-03-01 | |
dc.description.abstract | The 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.affiliation | UNIV WASHINGTON,DEPT PHYS,SEATTLE,WA 98195 | |
dc.format.extent | 1299-1308 | |
dc.identifier | http://dx.doi.org/10.1103/PhysRevC.49.1299 | |
dc.identifier.citation | Physical Review C. College Pk: American Physical Soc, v. 49, n. 3, p. 1299-1308, 1994. | |
dc.identifier.doi | 10.1103/PhysRevC.49.1299 | |
dc.identifier.file | WOSA1994NB79300013.pdf | |
dc.identifier.issn | 0556-2813 | |
dc.identifier.uri | http://hdl.handle.net/11449/35486 | |
dc.identifier.wos | WOS:A1994NB79300013 | |
dc.language.iso | eng | |
dc.publisher | American Physical Soc | |
dc.relation.ispartof | Physical Review C | |
dc.rights.accessRights | Acesso aberto | |
dc.source | Web of Science | |
dc.title | SELF-CONSISTENT SOLUTION OF THE SCHWINGER-DYSON EQUATIONS FOR THE NUCLEON AND MESON PROPAGATORS | en |
dc.type | Artigo | |
dcterms.license | http://publish.aps.org/authors/transfer-of-copyright-agreement | |
dcterms.rightsHolder | American Physical Soc | |
dspace.entity.type | Publication | |
unesp.campus | Universidade Estadual Paulista (UNESP), Instituto de Física Teórica (IFT), São Paulo | pt |
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