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

U. Reinosa

doi:10.1140/epja/i2005-10312-y

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

U. Reinosa

Heidelberg University

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

Résumé

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.

langue originale	Anglais
Pages (de - à)	129-131
Nombre de pages	3
journal	European Physical Journal A
Volume	29
Numéro de publication	1
Les DOIs	https://doi.org/10.1140/epja/i2005-10312-y
état	Publié - 1 juil. 2006
Modification externe	Oui

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AB - 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

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