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- Title
Non-perturbative renormalization of Φ-derivable approximations in theories with multiple fields.
- Authors
Reinosa, U.
- Abstract
We provide a renormalization procedure for Φ-derivable approximations in theories coupling different types of fields. We illustrate our approach on a scalar ϕ4 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.
- Subjects
RENORMALIZATION (Physics); ELECTRIC charge; FERMIONS; APPROXIMATION theory; BETHE-Salpeter equation; PARTICLES (Nuclear physics)
- Publication
European Physical Journal A -- Hadrons & Nuclei, 2006, Vol 29, Issue 1, p129
- ISSN
1434-6001
- Publication type
Article
- DOI
10.1140/epja/i2005-10312-y