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gr-qc2026
Axion corrections to photon superradiant scattering by Kerr black holes
Zhi-Qing Zhu, Jun Zhang
We study photon superradiant scattering by a Kerr black hole in the presence of an axion-photon coupling and investigate how this coupling modifies the electromagnetic amplificatio…
gr-qc2025
Black Hole Superradiance of Interacting Multi-Field
Zhi-Qing Zhu, Yun-Song Piao, Jun Zhang
We investigate black hole superradiance evolution of the interacting multiple fields. We consider a model of two scalar fields interacting with a cubic coupling, and study the supe…