Sebastian Buchta (IFIC Valencia)
The Loop-Tree Duality (LTD) is a novel perturbative method in QFT that establishes a relation between loop–level and tree–level amplitudes, which gives rise to the idea of treating them simultaneously in a common Monte Carlo. Initially introduced for one–loop scalar integrals, the applicability of the LTD has been expanded to higher order loops and Feynman graphs beyond simple poles. For the first time, a numerical implementation relying on the LTD was done in the form of a computer program that calculates one–loop scattering amplitudes. I will present details on the employed contour deformation as well as results for scalar and tensor integrals.