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- W4210489192 abstract "We study celestial amplitudes in (super) Yang-Mills theory using a parametrization of the spinor helicity variables where their overall phase is not fixed by the little group action. In this approach the spin constraint $hensuremath{-}overline{h}=J$ for celestial conformal primaries emerges naturally from a new Mellin transform, and the action of conformal transformations on celestial amplitudes is derived. Applying this approach to $mathcal{N}=4$ super Yang-Mills, we show how the appropriate definition of on-shell superspace coordinates leads naturally to a formulation of chiral celestial superamplitudes and a representation of the generators of the four-dimensional superconformal algebra on the celestial sphere, which by construction annihilate all tree-level celestial superamplitudes." @default.
- W4210489192 created "2022-02-08" @default.
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- W4210489192 date "2021-08-31" @default.
- W4210489192 modified "2023-10-10" @default.
- W4210489192 title "Celestial superamplitudes" @default.
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- W4210489192 doi "https://doi.org/10.1103/physrevd.104.045016" @default.
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