Local Infrared Factorisation: a Road to Numerical Scattering Amplitudes

by Giulio Gambuti (ETH Zurich)

Tuesday 14 Jul 2026, 11:00 → 12:00 Europe/Berlin

A.1.01 - Alps Süd (MPP)

A detailed picture of the infrared factorisation properties of scattering-amplitude integrands can be exploited to derive finite-remainder representations which are amenable to direct numerical integration. This provides an alternative to the usual analytic approaches. In this talk, I will present a proof-of-concept result: integrand representations for generic two-loop QED amplitudes which exhibit local factorisation in all soft and collinear limits. I will also discuss a corresponding local IR subtraction formula and elaborate on obstacles and ideas for their generalisation to QCD.