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arXiv · hep-ph/0510380

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

U. Reinosa
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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.

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U. Reinosa. 2006-06-14. Non-perturbative renormalization of Phi-derivable approximations in theories with multiple fields. https://doi.org/10.1140/epja%2Fi2005-10312-y

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