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It is shown that the study of the imaginary part and of the corresponding dispersion relations of Feynman graph amplitudes within the differential equations method can provide a powerful tool for the solution of the equations, especially in the massive case.
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2013
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2010
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M. F. Paulos, M. Spradlin, and A. Volovich, Mellin Amplitudes for Dual Conformal Integrals
2012
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S. Caron-Huot and K. J. Larsen, Uniqueness of two-loop master contours
2012
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2013
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J. M. Henn, Multiloop integrals in dimensional regularization made simple
2013
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A. B. Goncharov, Multiple polylogarithms and mixed Tate motives
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T. Gehrmann, A. von Manteuffel, L. Tancredi, and E. Weihs, The two-loop master integrals for q q ¯ → V V q\bar{q}\to VV
2014
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2015
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