Seminar series
Date
Fri, 07 Mar 2025
12:00
12:00
Location
L5
Speaker
Giorgio Pizzolo
Organisation
Durham University
The deep connection between the soft limits of scattering amplitudes and asymptotic symmetries relies on the construction of a well-defined phase space at null infinity, which can be set up perturbatively via an expansion in the soft particle energy. At leading order, this result has by now been established.
In this talk, I will present a new general procedure for constructing the extended phase space for Yang-Mills theory, based on the Stueckelberg mechanism, that is capable of handling the asymptotic symmetries and construction of charges responsible for sub-leading soft theorems at all orders. The generality of the procedure allows it to be directly applied to the computation of both three- and loop-level soft limits. Based on [2407.13556] and [2405.06629], with Silvia Nagy and Javier Peraza.