Abstract
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.
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Ferro, L., Moerman, R. The Grassmannian for celestial superamplitudes. J. High Energ. Phys. 2021, 187 (2021). https://doi.org/10.1007/JHEP11(2021)187
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DOI: https://doi.org/10.1007/JHEP11(2021)187