TH String Theory Seminar

A Survey of Ambitwistor String Theories

by Tim Adamo (DAMTP Cambridge)

Europe/Zurich
4/3-006 - TH Conference Room (CERN)

4/3-006 - TH Conference Room

CERN

110
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Description
Recently, Cachazo, He, and Yuan found remarkably compact expressions for the tree-level S-matrices of a wide variety of massless field theories. These formulae can be seen to arise from certain 2d CFTs known as "ambitwistor string theories", which are essentially string theories for field theory. I will try to give an overview of these theories, touching on their non-linear formulation, and how they can yield field theory amplitudes beyond tree-level.