The double copy of the multipole expansion
arXiv:2108.07702 · doi:10.1103/PhysRevD.106.086020
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.
9 pages plus references, 1 figure
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- Alternative formulations of the twistor double copy
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