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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

Displaying all lectures given by: David Skinner


Twistor Strings for N=8 Supergravity
Speaker(s): David Skinner
Abstract: The perturbative S-matrix of General Relativity has a rich and fascinating geometric structure that is completely obscured by its traditional description in terms of Feynman diagrams. I'll explain a new way of looking at four dimensional supergravity: as a string theory in twistor space. All t... read more
Date: 24/07/2013 - 9:45 am
Collection: Loops 13

Twistor Methods in N=4 SYM
Speaker(s): David Skinner
Abstract: I review how N=4 SYM can be reformulated as a theory on twistor space, and explain various calculations that have been performed there. In particular, twistors turn out to be a powerful tool for investigating the duality between scattering amplitudes and null polygonal Wilson Loops in the planar lim... read more
Date: 18/08/2011 - 11:40 am

Intro to Twistors
Speaker(s): David Skinner
Abstract:
Date: 01/08/2011 - 7:45 pm

Twistor-String Theory
Speaker(s): David Skinner
Abstract: I'll give an introduction to twistor-string theory, which is an attempt to reformulate supersymmetric gauge theory in four-dimensional space-time in terms of a certain generalisation of Gromov-Witten theory in twistor space. The resulting theory is closely related to the multi-dimensional residue ca... read more
Date: 09/05/2010 - 11:15 am

Heterotic Twistor-String Theory
Speaker(s): David Skinner
Abstract: I'll discuss a reformulation of twistor-string theory as a heterotic string. This clarifies why conformal supergravity arises and provides a link between the Berkovits and Witten pictures. The talk is based on arXiv:0708:2276 with Lionel Mason.
Date: 25/09/2007 - 11:00 am
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