Non linear $\sigma$ models : renormalisability versus geometry
High Energy Physics - Theory
2007-05-23 v1
Abstract
After some recalls on the standard (non)-linear model, we discuss the interest of B.R.S. symmetry in non-linear models renormalisation. We also emphasise the importance of a correct definition of a theory through physical constraints rather than as given by a particular Lagrangian and discuss some ways to enlarge the notion of renormalisability.
Cite
@article{arxiv.hep-th/9907149,
title = {Non linear $\sigma$ models : renormalisability versus geometry},
author = {Guy Bonneau},
journal= {arXiv preprint arXiv:hep-th/9907149},
year = {2007}
}
Comments
10 pages, latex file, Talk given in Cortona, Italy, at the 1st June meeting in honnor of Carlo Becchi 60th birthday