Logo Kérwá
 

Improved Epstein-Glaser renormalization in x-space versus differential renormalization

Loading...
Thumbnail Image

Authors

Gracia Bondía, José M.
Gutiérrez Garro, Heidy
Várilly Boyle, Joseph C.

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

Renormalization of massless Feynman amplitudes in x-space is reexamined here, using almost exclusively real-variable methods. We compute a wealth of concrete examples by means of recursive extension of distributions. This allows us to show perturbative expansions for the four-point and two-point functions at several loop order. To deal with internal vertices, we expound and expand on convolution theory for log-homogeneous distributions. The approach has much in common with differential renormalization as given by Freedman, Johnson and Latorre; but differs in important details.

Description

Keywords

RENORMALIZATION, MATHEMATICS, PHYSICS

Citation

https://www.sciencedirect.com/science/article/pii/S0550321314002375

Collections

Endorsement

Review

Supplemented By

Referenced By