Feynman diagrams with the effective action

نویسندگان

  • M. J. de la Plata
  • L. L. Salcedo
چکیده

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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تاریخ انتشار 2008