Description:

The on-shell superspace formulation of N=4 SYM allows the writing of all possible scattering processes in one compact object called the super-amplitude. Famously, the super-amplitude integrand can be extracted from generalized polyhedra called the amplituhedron. In the paper arXiv:1701.00452v3 a new geometrical object is introduced called the correlahedron, conjectured to be equivalent to  stress-energy correlators. These are intimately related to planar amplitudes, giving them in multiple lightlike limits.  In this talk I will review some geometrical aspects of the amplituhedron, also giving a graphical visualization, and show some recent results on its connection with a lightlike limit of the correlahedron.

Seminar Speaker: Gabriele Dian, Durham University

Keywords: Physics, Astronomy, HEP