Feynman diagrams with the effective action
classification
✦ hep-th
keywords
actionfeynmanapplicationscomputationderivationdiagramsdiscussedeffective
read the original 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.
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