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arXiv · 2108.07702

The double copy of the multipole expansion

Erick Chacón·Andres Luna·Chris D. White
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Abstract

We consider the classical double copy, that relates solutions of biadjoint scalar, gauge and gravity theories. Using a recently developed twistor expression of this idea, we use well-established techniques to show that the multipole moments of arbitrary vacuum type D gravity fields are straightforwardly mapped to their counterparts in gauge and biadjoint scalar theory by the single and zeroth copies. We cross-check our results using previously obtained results for the Kerr metric. Our results provide further physical intuition of how the double copy operates.

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Erick Chacón, Andres Luna, Chris D. White. 2021-08-17. The double copy of the multipole expansion. https://doi.org/10.1103/physrevd.106.086020

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