Renormalization of Self-consistent Approximation schemes II: Applications to the sunset diagram

Abstract

The theoretical concepts for the renormalization of self-consistent Dyson resummations, deviced in the first paper of this series, are applied to first example cases for the φ-theory. Besides the tadpole (Hartree) approximation as a novel part the numerical solutions are presented which includes the sunset self-energy diagram into the self-consistent scheme based on the Φ-derivable approximation or 2PI effective action concept.

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Cite this paper

@inproceedings{Hees2009RenormalizationOS, title={Renormalization of Self-consistent Approximation schemes II: Applications to the sunset diagram}, author={Hendrik van Hees and J{\"{o}rn Knoll}, year={2009} }