| Revista: | Brazilian journal of physics |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000156876 |
| ISSN: | 0103-9733 |
| Autors: | Peña, Francisco1 Nemes, M. Carolina Blin, Alex H Hiller, Brigitte |
| Institucions: | 1Universidade Federal de Minas Gerais, Instituto de Ciencias Exactas, Belo Horizonte, Minas Gerais. Brasil 2Universidade de Coimbra, Departamento de Física, Coimbra. Portugal |
| Any: | 1999 |
| Període: | Sep |
| Volum: | 29 |
| Número: | 3 |
| Paginació: | 469-482 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Analítico |
| Resumen en inglés | We present a symmetry preserving approach to1/N (N being the number of colors) corrections in the Nambu-Jona-Lasinio model. This is achieved through an explicit 1/N expansion where N is considered as a free parameter. Verification and use of the pertinent Ward identity to the next to leading order in 1/N is made in obtaining the Goldberger-Treiman relation. Although the present results are not new, the approach may be useful for deriving higher (than one loop) corrections to the NJL model in a systematic way |
| Disciplines | Física y astronomía |
| Paraules clau: | Física de partículas y campos cuánticos, Modelo NJL, Piones, Dinámica quirial, Diagramas de Feynman, Mesones |
| Keyword: | Physics and astronomy, Particle physics and quantum fields, NJL model, Pions, Chiral dynamics, Feynman graphs, Mesons |
| Text complet: | Texto completo (Ver HTML) |
