Algebraic Structure of Cut Feynman Integrals and the Diagrammatic Coaction
Algebraic Structure of Cut Feynman Integrals and the Diagrammatic Coaction
We study the algebraic and analytic structure of Feynman integrals by proposing an operation that maps an integral into pairs of integrals obtained from a master integrand and a corresponding master contour. This operation is a coaction. It reduces to the known coaction on multiple polylogarithms, but applies more generally, …