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Department of Mathematical Sciences

Seminar Archives

On this page you can find information about seminars in this and previous academic years, where available on the database.

CPT Student Seminar: A Geometric Approach to Scattering Amplitudes in N = 8 Supergravity

Presented by Joe Farrow, Durham University

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 for more information

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.