[SEMINARI] SEMINAR: David Greynat, Mellin-Barnes representation, Converse Mapping theorem and Feynman's diagrams

[German Rodrigo Garcia]

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

David Greynat
IFIC Valencia
Wednesday, 25 of October of 2006     12:00 PM
IFIC's Seminar
Abstract

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.