Meson loop corrections to the NJL model
| Autor: | M. Carolina Nemes, Alex H. Blin, Francisco Peña, Brigitte Hiller |
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| Jazyk: | angličtina |
| Rok vydání: | 1999 |
| Předmět: | |
| Zdroj: | Brazilian Journal of Physics, Volume: 29, Issue: 3, Pages: 469-482, Published: SEP 1999 Brazilian Journal of Physics v.29 n.3 1999 Brazilian Journal of Physics Sociedade Brasileira de Física (SBF) instacron:SBF |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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