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arXiv · 2402.11595

Double-Copy Supertranslations

Pietro Ferrero·Dario Francia·Carlo Heissenberg·Matteo Romoli
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Abstract

In the framework of the convolutional double copy, we investigate the asymptotic symmetries of the gravitational multiplet stemming from the residual symmetries of its single-copy constituents at null infinity. We show that the asymptotic symmetries of Maxwell fields in D=4 imply ``double-copy supertranslations", i.e. BMS supertranslations and two-form asymptotic symmetries, together with the existence of infinitely many conserved charges involving the double-copy scalar. With the vector fields in Lorenz gauge, the double-copy parameters display a radial expansion involving logarithmic subleading terms, essential for the corresponding charges to be nonvanishing.

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Pietro Ferrero, Dario Francia, Carlo Heissenberg, Matteo Romoli. 2024-02-18. Double-Copy Supertranslations. https://arxiv.org/abs/2402.11595

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