Cutkosky representation and direct integration

Cutkosky representation and direct integration

Blog Article

Abstract We present a new method of direct integration of Feynman integrals based on the Cutkosky representation of the integrals.In this representation we are able to explicitly compute the integrals which yield little girls sweatshirts square root singularities and leave only the integrals which yield end tables logarithmic singularities, thus making the transcendentality weight manifest.The method is elementary, algorithmic, does not introduce spurious non-physical singularities and does not require a reduction to a basis of pure integrals.