Quark Schwinger-Dyson evaluation of the l(1),l(2) coefficients in the chiral Lagrangian
Using a systematic expansion of the quark-antiquark Bethe Salpeter wave functions in the relativistic quark model and working to O(P-4) in the chiral limit, we are able to derive theoretical expressions relating the coefficients of the chiral Lagrangian l(1),l(2) to the underlying quark-antiquark wa...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2003 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/58813 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/58813 |
| Access Level: | acceso abierto |
| Palabra clave: | 53 P-3(0) Condensed Vacuum Perturbation-Theory Symmetry Model Qcd Mesons Scattering Resonances Expansion Breaking Física (Física) 22 Física |
| Sumario: | Using a systematic expansion of the quark-antiquark Bethe Salpeter wave functions in the relativistic quark model and working to O(P-4) in the chiral limit, we are able to derive theoretical expressions relating the coefficients of the chiral Lagrangian l(1),l(2) to the underlying quark-antiquark wave functions and interaction kernels. This is accomplished by using a novel technique based on a Ward identity for the quark-antiquark ladder kernel which greatly simplifies the required effort. Numerical evaluations are performed in two simple specific models. |
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