Non-perturbative renormalization of Phi-derivable approximations in theories with multiple fields
High Energy Physics - Phenomenology
2009-11-11 v2
Abstract
We provide a renormalization procedure for Phi-derivable approximations in theories coupling different types of fields. We illustrate our approach on a scalar phi^4 theory coupled to fermions via a Yukawa-like interaction. The non-perturbative renormalization amounts to fixing the scalar coupling via a set of nested Bethe-Salpeter equations coupling fermions to scalars.
Cite
@article{arxiv.hep-ph/0510380,
title = {Non-perturbative renormalization of Phi-derivable approximations in theories with multiple fields},
author = {U. Reinosa},
journal= {arXiv preprint arXiv:hep-ph/0510380},
year = {2009}
}
Comments
4 pages, poster contribution at the Workshop on Quark Gluon Plasma Thermalization, Vienna, August 10-12, 2005 Minor changes: added reference and definition