Ponente
Alexandre Salas-Bernárdez
(Universidad Complutense de Madrid)
Abstract
The study of QFT amplitudes in coordinate-space is usually overlooked due to historical and practical reasons. In this talk I will try to convince you that some clear interpretations of well known features (such as the Coleman-Norton trick to identify IR divergencies) arise in coordinate-space (CS). I will review the main results of factorization of amplitudes in CS and compare them to momentum space ones, and present as well some original computations of the one-loop QCD jet function in CS and one radiative contribution to it. Also, I will present an original derivation of Time Ordered Perturbation Theory to all orders in CS and show some examples to clarify and connect with previous concepts.
Autor primario
Alexandre Salas-Bernárdez
(Universidad Complutense de Madrid)
