CPT Student Seminar: A Geometric Approach to Scattering Amplitudes in N = 8 Supergravity
6 February 2017 17:00 in OC218
I will introduce the language of on-shell diagrams for calculating scattering amplitudes via BCFW recursion in N = 4 super Yang Mills theory, and then explain how they can be extended to N = 8 supergravity. I will describe how this approach relates scattering amplitudes to the Grassmannian Gr(k,n), a purely geometric object describing the space of k planes in n dimensions. This link to the Grassmannian introduces a new planar object into the theory which generates physical amplitudes, and exposes a duality between on-shell diagrams and ambi-twistor string theory. I will present my work in progress in this area.
Contact Daniel Martin
A gathering of mathematicians from the CPT group with physicists from IPPP, we meet to discuss our work in a relaxed and friendly environment.
An archive of previous years talks is kept here.