Feynman diagrams with the effective action

Details Feynman diagrams with the effective action Feynman diagrams with the effective action

1996-09-12

arxiv.org/abs/hep-th/9609103v2

J.Phys.A31:4021-4035,1998

Physics

High Energy Physics

High Energy Physics - Theory

Extended revised version. RevTex, 19 pages, 10 figures

Scientific paper

10.1088/0305-4470/31/17/012

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.

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