From motives to differential equations for loop integrals [PDF]
S. Müller-Stach, S. Weinzierl, R. ZayadehIn this talk we discuss how ideas from the theory of mixed Hodge structures can be used to find differential equations for Feynman integrals. In particular we discuss the two-loop sunrise graph in two dimensions and show that these methods lead to a differential equation which is simpler than the ones obtained from integration-by-parts.View original: http://arxiv.org/abs/1209.3714
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