Description
Higher-order perturbative corrections to scattering processes are essential for achieving theoretical predictions that match the precision of current and future collider experiments. One of the main bottlenecks in obtaining these corrections is the computation of the multi-loop amplitudes. In this seminar, I will discuss two methods that address some of these computational challenges, in particular for multi-loop amplitudes that involve many kinematic scales. The first part will be on avoiding contour deformation in numerical integration of Feynman integrals, and the second part will be about constructing accurate, fast-to-evaluate interpolation grids for multi-dimensional amplitudes.