Mellin-Barnes representation, Converse Mapping theorem and Feynman's diagrams

por David Greynat (IFIC Valencia)

miércoles 25 oct. 2006 12:00 → 13:00 Europe/Madrid

Sala Seminarios IFIC (Edf. Institutos de Investigación)

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.

Diapositivas transpis578.ppt