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Aspects of Nonlinear Effect on Black Hole Superradiance

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arxiv 1910.06308 v1 pith:4IWVBWSR submitted 2019-10-14 hep-ph gr-qc

Hajime Fukuda , Kazunori Nakayama This is my paper
classification hep-phgr-qc
keywords bosonblackholeinstabilitynonlinearcloudeffectinteractions
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Under some conditions, light boson fields grow exponentially around a rotating black hole, called the superradiance instability. We discuss effects of nonlinear interactions of the boson on the instability. In particular, we focus on the effect of the particle production and show that the growth of the boson cloud may be saturated much before the black hole spin is extracted by the boson cloud, while the nonlinear interactions also induce the boson emission. For application, we revisit the superradiant instability of the standard model photon, axion and hidden photon.

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Cited by 2 Pith papers

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  1. Perturbing Gravitational Atoms: Negative Love, Resonant Tides and Shifted Resonances

    gr-qc 2026-07 accept novelty 7.0 of 10

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    Time-resolved spectroscopy of S-stars around Sgr A* can probe oscillations of the fine-structure constant induced by superradiant axion clouds or dark-matter soliton cores, with future instruments potentially reaching...

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