Apr 13 – 17, 2015
The Galileo Galilei Institute for Theoretical Physics (GGI)
Europe/Rome timezone

Looking for an on-shell regulator

Apr 15, 2015, 2:50 PM
30m
Room B (The Galileo Galilei Institute for Theoretical Physics (GGI))

Room B

The Galileo Galilei Institute for Theoretical Physics (GGI)

Speaker

Eduardo Conde Pena

Description

A generic QFT without mass gap may present IR and UV divergencies, which must be regularized before making sense of them. In a Feynman diagram, one thinks of these divergencies as arising from an infinite integration region for a certain off-shell momentum. When one treats the theory purely on-shell, these divergencies must be seen (and regularized) in some other way. In this talk I present an approach to tackle this problem, in the particular case of divergencies of scattering amplitudes, using the so-called on-shell diagrams.

Presentation materials