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arXiv · 2205.12982

Supersymmetric Massive Gravity

Laura Engelbrecht·Callum R. T. Jones·Shruti Paranjape
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Abstract

We initiate a systematic study of the self-interactions of a massive spin-2 "graviton" consistent with up to $\mathcal{N}=4$ supersymmetry. Using a recently developed massive on-shell superspace formalism, we construct the most general set of cubic massive graviton amplitudes in a form with all supersymmetry and Lorentz invariance manifest. We find that for $\mathcal{N}\geq 3$ supersymmetry, the family of consistent interactions coincide with those of the ghost-free dRGT model. For $\mathcal{N}=4$ (maximal) supersymmetry there is a single consistent cubic interaction which coincides with the unique structure required for the absence of asymptotic superluminality. Additionally, we discuss the structure of interactions in the high-energy limit, connections to supersymmetric Galileons and the possibility of a supersymmetric massive double copy.

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Laura Engelbrecht, Callum R. T. Jones, Shruti Paranjape. 2024-03-03. Supersymmetric Massive Gravity. https://doi.org/10.1007/jhep10(2022)130

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