Non-perturbative renormalization of Phi-derivable approximations in theories with multiple fields

Details Non-perturbative renormalization of Phi-derivable approximations in theories with multiple fields Non-perturbative renormalization of Phi-derivable approximations in theories with multiple fields

2005-10-28

arxiv.org/abs/hep-ph/0510380v2

Eur.Phys.J. A29 (2006) 129-131

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, poster contribution at the Workshop on Quark Gluon Plasma Thermalization, Vienna, August 10-12, 2005 Minor changes: a

Scientific paper

10.1140/epja/i2005-10312-y

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.

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