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Two-loop feynman diagram for n-point green function. the external lines Feynman diagram associated with g represented by thick dashed lines Feynman particle

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One-loop feynman diagrams contributing to the two-point green's

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Feynman diagrams for the GW self-energy in terms of the Green's

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Feynman diagrams with different vertices. Each diagram is composed of

First-order feynman diagrams of the four-particle green’s function

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