Mellin-Barnes representation, Converse Mapping theorem and Feynman's
diagrams
por
David Greynat
(IFIC Valencia)
→
Europe/Madrid
Sala Seminarios IFIC (Edf. Institutos de Investigación)
Sala Seminarios IFIC
Edf. Institutos de Investigación
Descripción
After a brief review of different methods to calculate Feynman Diagrams, I will present a new method based on the combination of a Feynman's parameterization and Mellin-Barnes representation of a graph and the utilisation of the Converse Mapping Theorem that permit to obtain the terms of an asymptotic development in ratios of masses. I will discuss examples of various contributions to the muon g-2 to illustrate this powerful technique.