Singularity structure of gravity amplitudes

57 mins 17 secs,  830.55 MB,  MPEG-4 Video  640x360,  29.97 fps,  44100 Hz,  1.93 Mbits/sec
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Description: Trnka, J (University of California, Davis)
Friday 1st July 2016 - 16:00 to 17:00
 
Created: 2016-07-06 11:57
Collection: Gravity, Twistors and Amplitudes
Publisher: Isaac Newton Institute
Copyright: Trnka, J
Language: eng (English)
Distribution: World     (downloadable)
Explicit content: No
Aspect Ratio: 16:9
Screencast: No
Bumper: UCS Default
Trailer: UCS Default
 
Abstract: Coauthor: Enrico Herrmann

There has been a lot of progress in exploring new mathematical structures in N=4 SYM amplitudes: on-shell diagrams and Amplituhedron in the planar sector, and special properties of integrands beyond the planar limit. I will review some of these developments and then focus how the similar ideas can be extended to N=8 supergravity amplitudes. As it turns out the singularity structure of supergravity amplitudes is very different and it exhibits some surprising features at both UV and IR.
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