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arXiv · 2210.04704

Classical double copy and higher-spin fields

V. E. Didenko·N. K. Dosmanbetov
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Abstract

Kerr-Schild double copy is shown to extend naturally to all free symmetric gauge fields propagating on $(A)dS$ in any dimension. Similarly to the standard lower-spin case, the higher-spin multicopy comes along with the zeroth, single, and double copies. The mass-like term of the Fronsdal spin $s$ field equations fixed by gauge symmetry and the mass of the zeroth copy both appear to be remarkably fine-tuned to fit the multicopy pattern forming a spectrum organized by higher-spin symmetry. On the black hole side this curious observation fills up the list of miraculous properties of the Kerr solution.

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V. E. Didenko, N. K. Dosmanbetov. 2023-02-21. Classical double copy and higher-spin fields. https://doi.org/10.1103/physrevlett.130.071603

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