Abstract
We consider the momentum-space 3-point correlators of currents, stress tensors and marginal scalar operators in general odd-dimensional conformal field theories. We show that the flat space limit of these correlators is spanned by gauge and gravitational scattering amplitudes in one higher dimension which are related by a double copy. Moreover, we recast three-dimensional CFT correlators in terms of tree-level Feynman diagrams without energy conservation, suggesting double copy structure beyond the flat space limit.
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Farrow, J.A., Lipstein, A.E. & McFadden, P. Double copy structure of CFT correlators. J. High Energ. Phys. 2019, 130 (2019). https://doi.org/10.1007/JHEP02(2019)130
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DOI: https://doi.org/10.1007/JHEP02(2019)130