4 research outputs found

    A Table of Third and Fourth Order Feynman Diagrams of the Interacting Fermion Green's Function

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    The Feynman diagrams of the Green's function expansion of fermions interacting with a non-relativistic 2-body interaction are displayed in first, second and third order of the interaction as 2, 10 and 74 diagrams, respectively. A name convention for the diagrams is proposed and then used to tabulate the 706 diagrams of fourth order. The Hartree-Fock approximation summons up 2, 8, 40 and 224 of them, respectively.Comment: 12 pages, 13 figures, 16 tables. Index typo in Sect III corrected. More lines in Table XV. Three more references. Expanded Summar

    Matrix model and dimensions at hypercube vertices

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