Related papers: 2-point 2-loop graph with arbitrary self-energy in…

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This paper was withdrawn by the author because the results already appeared in PRB 20, 4756 (1979).

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The scalar two-loop self-energy master diagram is studied in the case of arbitrary masses. Analytical results in terms of Lauricella- and Appell-functions are presented for the imaginary part. By using the dispersion relation a…

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