| Revista: | Brazilian journal of physics |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000397447 |
| ISSN: | 0103-9733 |
| Autores: | Lourenco, O1 Dutra, M1 Amaral, R.L.P.G1 Delfino, Antonio1 |
| Instituciones: | 1Universidade Federal Fluminense, Instituto de Fisica, Niteroi, Rio de Janeiro. Brasil |
| Año: | 2012 |
| Periodo: | Ago |
| Volumen: | 42 |
| Número: | 3-4 |
| Paginación: | 227-236 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Analítico |
| Resumen en inglés | In this work, we show how nonlinear pointcoupling models, described by a Lagrangian density containing only terms up to fourth order in the fermion condensate (ψψ) , are derived from a modified mesonexchange nonlinear Walecka model. We present two methods of derivation, namely the hypermassive meson limit within a functional integral approach and the mean-field approximation, in which equations of state at zero temperature of the nonlinear point-coupling models are directly obtained |
| Disciplinas: | Física y astronomía |
| Palabras clave: | Física nuclear, Teoría cuántica de campos, Problema de muchos cuerpos |
| Keyword: | Physics and astronomy, Nuclear physics, Quantum field theory, Many body problem |
| Texto completo: | Texto completo (Ver PDF) |
