Abstract
We sum up two- and three-point amplitudes in the chiral higher-spin theory over helicities and find that these quite manifestly have the form of invariant traces of the flat space chiral higher-spin algebra. We consider invariant traces of products of higher numbers of on-shell higher-spin fields and interpret these as higher-point scattering amplitudes. This construction closely mimics its anti-de Sitter space counterpart, which was considered some time ago and was confirmed holographically.
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Ponomarev, D. Invariant traces of the flat space chiral higher-spin algebra as scattering amplitudes. J. High Energ. Phys. 2022, 86 (2022). https://doi.org/10.1007/JHEP09(2022)086
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DOI: https://doi.org/10.1007/JHEP09(2022)086