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Perturbation expansions Feynman-Goldstone

A Computer-Algebraic Approach to the Derivation of Feynman-Goldstone Perturbation Expansions for Open-Shell Atoms and Molecules... [Pg.177]

The operators above in second quantization can be represented and manipulated also diagrammatically, that is by means of Feynman-Goldstone diagrams. Usually, these representations provide a simple and transparent approach to evaluate the various contributions from the perturbation expansions. There are different graphical representations known, which were developed by Goldstone [8],... [Pg.192]

See other pages where Perturbation expansions Feynman-Goldstone is mentioned: [Pg.495]    [Pg.177]    [Pg.184]    [Pg.185]    [Pg.198]    [Pg.198]    [Pg.203]    [Pg.204]    [Pg.321]   
See also in sourсe #XX -- [ Pg.193 ]



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A Computer-Algebraic Approach to the Derivation of Feynman-Goldstone Perturbation Expansions for Open-Shell Atoms and Molecules

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