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  • Open Access

Color-kinematics and double-copy relations for self-dual solutions

Joris Raeymaekers*

  • *Contact author: joris@fzu.cz
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Phys. Rev. D 111, 126007 – Published 13 June, 2025

DOI: https://doi.org/10.1103/9v1z-56hp

Abstract

We clarify the relation between the classical double copy and the double copy for amplitudes in the setting of self-dual gauge and gravity theories. To this end we construct explicit all-order perturbative solutions in these theories and show that they are related by a version of color-kinematics duality. This relation can be expressed in a double-copy form and embodies the most general manifestation of the self-dual classical double copy. Our classical double-copy relations directly lead to known amplitude double-copy relations, both for Berends-Giele currents and on-shell amplitudes, through the perturbiner expansion.

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Phys. Rev. D 111, 126007– Published 13 June, 2025
  • Received 11 April 2025
  • Accepted 21 May 2025
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

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