High Energy Theory Seminar
Online and In-Person Event
The soft physics of amplitudes in background fields
Sonja Klisch,
Perimeter Institute,
Soft theorems and collinear singularities in flat space tell us much about the structure of scattering amplitudes. The question I ask in this talk is: what are the soft limits of scattering amplitudes on non-trivial backgrounds? We will study the case of plane waves (in gauge theory and in gravity, a special case of pp-wave spacetimes) and see how a background field, treated non-perturbatively, affects the infrared properties of scattering processes. It turns out that this can be quite different to flat space. Based on 2504.09314.
Contact [email protected] for Zoom information.
For more information, please visit https://www.theory.caltech.edu/seminars/high-energy-theory-informal-meeting.