Improved Epstein-Glaser renormalization in x-space versus differential renormalization
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| Autores: | , , |
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| Formato: | artículo original |
| Fecha de Publicación: | 2014 |
| Descripción: | Renormalization of massless Feynman amplitudes in x-space is reexamined here, using almost exclusively real-variable methods. We compute a wealth of concrete examples by means of recursive extension of distributions. This allows us to show perturbative expansions for the four-point and two-point functions at several loop order. To deal with internal vertices, we expound and expand on convolution theory for log-homogeneous distributions. The approach has much in common with differential renormalization as given by Freedman, Johnson and Latorre; but differs in important details. |
| País: | Kérwá |
| Institución: | Universidad de Costa Rica |
| Repositorio: | Kérwá |
| Lenguaje: | Inglés |
| OAI Identifier: | oai:kerwa.ucr.ac.cr:10669/90306 |
| Acceso en línea: | https://www.sciencedirect.com/science/article/pii/S0550321314002375 https://hdl.handle.net/10669/90306 |
| Palabra clave: | RENORMALIZATION MATHEMATICS PHYSICS |