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

U. Reinosa

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Publication date

September 2006

DOI

10.1140/epja/i2005-10312-y

Publisher

Springer Science and Business Media LLC

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

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

Abstract

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

Abstract

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