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arXiv · 2410.21610

Hyper-Hermitian Weyl Double Copy

E. Chacón·H. García-Compeán·G. Robles
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Abstract

The self-dual double copy is further explored. In previous work, it has been shown that hyper-Hermitian manifolds also have associated the self-dual gauge theories via Kerr-Schild double copy. The self-dual double copy is generalized in the structure of the kinematic algebra by replacing the area-preserving diffeomorphisms algebra with the diffeomorphisms on a surface algebra. This gave rise to the hyper-Hermitian double copy in the Kerr-Schild approach. In the present article, we further study the hyper-Hermitian case using the Weyl double copy formalism. In particular, we have found solutions within this formalism for different hyper-Hermitian metrics. One of the main features is that there will be two Maxwell spinors and one of them is source-free while the other has a source current. This is compatible with the fact that, in general, the hyper-Hermitian spaces are not Ricci-flat.

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E. Chacón, H. García-Compeán, G. Robles. 2024-10-28. Hyper-Hermitian Weyl Double Copy. https://arxiv.org/abs/2410.21610

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