Deformations of QFTs and Connes-Marcolli's renormalization group in Epstein-Glaser scheme
arXiv:1002.3389
Abstract
This short note aims to describe the deformations of QFTs and give an action of the same pro-algebraic group which appears in Connes-Marcolli's setting, on the finite QFTs constructed by Epstein-Glaser renormalization scheme.
8 pages. The main part of this note has been completely rewritten. A section on deformation of QFTs has been added. The renormalization group has been discussed as an explicit subgroup of the group of symmetries of space of QFTs. Title has been changed, introduction has been updated, necessary changes through the text have been made accordingly.