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Effective Action for the Scalar Field Theory with Higher Vertices

Chungku Kim

hep-tharXiv:hep-th/0609178

Abstract

We derive a new kind of recursion relation to obtain the one-particle-irreducible (1PI) Feynman diagrams for the effective action. By using this method, we have obtained the graphical representation of the four-loop effective action in case of the general bosonic field theory which have vertices higher than the four-point vertex.

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