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Scattering Amplitudes and The Cotton Double Copy

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arxiv 2202.10499 v1 pith:T3FBXASJ submitted 2022-02-21 hep-th gr-qc

William T. Emond , Nathan Moynihan This is my paper · ORCID
classification hep-thgr-qc
keywords copydoubleamplitudescottonmassivecurvaturespinorstopologically
verification ladder T0 review T1 audit T2 compute T3 formal
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We construct classical curvature spinors in topologically massive gauge theory and topologically massive gravity, expressed in terms of massive three-particle amplitudes. We show that when the amplitudes double copy, the curvature spinors satisfy the Cotton double copy, the three-dimensional cousin of the Weyl double copy. Furthermore, we show that under certain circumstances the Cotton double copy can be derived via a dimensional reduction of the Weyl double copy.

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  1. Gleaning gravitational amplitudes -- a double copy for canceling dilatons

    hep-th 2025-01 conditional novelty 7.0 of 10

    An asymmetric double copy with a ghost-like sqrt-dilaton cancels dilaton contaminations in tree-level GR amplitudes with massive scalars up to six points, leaving a residual bubble ambiguity at one loop.

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