The University of Southampton

SHEP Friday Seminar - Paul Heslop - The amplituhedron, internal boundaries and deep cuts - Event

2nd of December, 2022  @  13:00 - 14:15
46/5081 and on Teams

Event details

​I will begin with a slow introduction  to the amplituhedron, carefully explaining how to extract N=4 SYM amplitudes from it in detail. Then I will point out a couple of subtleties with the procedure in the literature, in particular showing that the lop amplituhedron is not a positive geometry as previously defined. We will thus extend the definition of positive geometries and further propose a more general mathematical space "weighted positive geometry". We will also discuss implications for the "deepest cut" of the amplitude.

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