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On-Shell Diagrams for N = 8 Supergravity Amplitudes

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GTAW01 - General relativity: from geometry to amplitudes

Standard Feynman diagram techniques often obscure the underlying simplicity of on-shell scattering amplitudes. This difficulty can be overcome by working with on-shell diagrams, which do not contain virtual particles. In this talk, I will describe tree-level recursion relations for N = 8 supergravity amplitudes using a generalisation of the on-shell diagrams developed for planar N = 4 super-Yang-Mills, which imply new identities for non-planar diagrams as well as interesting relations between the N=4 and N=8 theories. If time permits, I will also speculate on the extension of this approach to loop-level. This talk is based on 1604.03046, in collaboration with Paul Heslop.

This talk is part of the Isaac Newton Institute Seminar Series series.

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