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SUMMARY:From the twistor action to  amplitudes\, Wilson loops\, dlogs and 
 dilogs - Lionel Mason (Oxford)
DTSTART:20150217T160000Z
DTEND:20150217T170000Z
UID:TALK57044@talks.cam.ac.uk
CONTACT:Tim Adamo
DESCRIPTION:N=4 super Yang-Mills can be formulated in twistor space via a 
 twistor action. Feynman diagrams for this formulation in twistor space in 
 an axial gauge are vastly simpler than their standard counterpart. They na
 turally express the underlying superconformal invariance and have very few
  terms for a given amplitude. They give a proof of the planar amplitude/Wi
 lson loop correspondence diagram by diagram. They relate simply to recent 
 concepts such as the amplituhedron and naturally lead to the loop integran
 d in dlog form and can be evaluated to give the expected polylogs without 
 Feynman parameters. 
LOCATION:DAMTP\, room MR11
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