Speaker
Dr
Giulio Gambuti
(ETH Zurich)
Description
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, which enables their direct numerical integration, and elaborate on obstacles and ideas for generalisations to QCD.
Author
Dr
Giulio Gambuti
(ETH Zurich)