Feynman diagrams with the effective action
High Energy Physics - Theory
2008-11-26 v2
Abstract
A derivation is given of the Feynman rules to be used in the perturbative computation of the Green's functions of a generic quantum many-body theory when the action which is being perturbed is not necessarily quadratic. Some applications are discussed.
Cite
@article{arxiv.hep-th/9609103,
title = {Feynman diagrams with the effective action},
author = {M. J. de la Plata and L. L. Salcedo},
journal= {arXiv preprint arXiv:hep-th/9609103},
year = {2008}
}
Comments
Extended revised version. RevTex, 19 pages, 10 figures