Theory Colloquia

Non-perturbative Amplituhedron Geometries

by Jaroslav Trnka

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

4/3-006 - TH Conference Room


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I will discuss some new developments in the context of the Amplituhedron construction for planar N=4 SYM scattering amplitudes. I will define a negative Amplituhedron geometry which provides an all-loop order definition for a certain IR finite quantity, related to the ratio of null polygonal Wilson loops. Then I will show that the Amplituhedron picture suggests an interesting expansion of this quantity in terms of "loops of loops", unrelated to the usual small coupling expansion. In the leading order, I will provide an exact result to all orders in the coupling, and show the relation to the cusp anomalous dimension. Finally, I will discuss a certain interesting deformation of the geometric construction, and then conclude with future directions.

TH colloquia
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Elena Gianolio
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Zoom Recording Operations 2, Irene Valenzuela Agui, Benoit Loyer, Clement Montcharmont, Pier Francesco Monni, AVC support account, Urs Wiedemann, Thomas Nik Bazl Fard, Pascal Pignereau
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