| Journal: | Brazilian journal of physics |
| Database: | PERIÓDICA |
| System number: | 000328615 |
| ISSN: | 0103-9733 |
| Authors: | Dias, E.W1 Scarpelli, A.P. Baeta2 Brito, L.C.T3 Fargnoli, H.G4 |
| Institutions: | 1Universidade Federal de Minas Gerais, Departamento de Fisica, Belo Horizonte, Minas Gerais. Brasil 2Centro Federal de Educacao Tecnologica, Belo Horizonte, Minas Gerais. Brasil 3Universidade Federal de Lavras, Departamento de Ciencias Exatas, Lavras, Minas Gerais. Brasil |
| Year: | 2010 |
| Season: | Jun |
| Volumen: | 40 |
| Number: | 2 |
| Pages: | 228-234 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental |
| English abstract | We establish a systematic way to calculate multiloop amplitudes of infrared safe massless models with Implicit Regularization (IR), with a direct cancelation of the fictitious mass introduced by the procedure. The ultraviolet content of such amplitudes have a simple structure and its separation permits the identification of all the potential symmetry violating terms, the surface terms. Moreover, we develop a technique for the calculation of an important kind of finite multiloop integral which seems particularly convenient to use Feynman parametrization. Finally, we discuss the Implicit Regularization of infrared divergent amplitudes, showing with an example how it can be dealt with an analogous procedure in the coordinate space |
| Disciplines: | Física y astronomía, Matemáticas |
| Keyword: | Física, Matemáticas aplicadas, Normalización, Renormalización, Cálculos multilazo |
| Keyword: | Physics and astronomy, Mathematics, Physics, Applied mathematics, Regularization, Renormalization, Multiloop calculations |
| Full text: | Texto completo (Ver HTML) |
