The Grassmannian for Celestial Superamplitudes

Understand

Recently, scattering amplitudes in four-dimensional Minkowski spacetime have been interpreted as conformal correlation functions on the two-dimensional celestial sphere, the so-called celestial amplitudes.

• In this note we consider tree-level scattering amplitudes in $\mathcal{N}=4$ super Yang-Mills theory and present a Grassmannian formulation of their celestial counterparts.
• This result paves the way towards a geometric picture for celestial superamplitudes, in the spirit of positive geometries.