arXiv:hep-th/9609103 · Journal of Physics A Mathematical and General

Feynman diagrams with the effective action

M J de la Plata, L. L. Salcedo

Published May 1, 1998• 3 citations

Abstract

A derivation is given of the Feynman rules to be used in the perturbative computation of the Green functions of a generic quantum many-body theory when the action which is being perturbed is not necessarily quadratic. Some applications are discussed.

DOI: 10.1088/0305-4470/31/17/012

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