From multiple unitarity cuts to the coproduct of Feynman integrals
From multiple unitarity cuts to the coproduct of Feynman integrals
We develop techniques for computing and analyzing multiple unitarity cuts of Feynman integrals, and reconstructing the integral from these cuts. We study the relations among unitarity cuts of a Feynman integral computed via diagrammatic cutting rules, the discontinuity across the corresponding branch cut, and the coproduct of the integral. For …