Nonlinear evolution of the spin-2 black hole superradiant instability
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arXiv
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| Hauptverfasser: | , |
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| Format: | Preprint |
| Veröffentlicht: |
2025
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| _version_ | 1866914041218203648 |
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| author | May, Taillte East, William E. |
| author_facet | May, Taillte East, William E. |
| contents | Massive spin-2 fields, which arise in proposed extensions of the standard model of particle physics and general relativity, give rise to a superradiant instability around spinning black holes. We study the nonlinear evolution of this instability in quadratic gravity, where quadratic curvature terms are added to the Einstein-Hilbert action. We find that as the massive spin-2 field grows, the black hole's spin increases, accelerating the growth rate, and eventually leading to a superextremal horizon. This sharply contrasts with the spin-down and eventual saturation that occurs due to the backreaction of the superradiant instability of a minimally coupled massive spin-0 or spin-1 field. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_13488 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Nonlinear evolution of the spin-2 black hole superradiant instability May, Taillte East, William E. General Relativity and Quantum Cosmology High Energy Physics - Phenomenology Massive spin-2 fields, which arise in proposed extensions of the standard model of particle physics and general relativity, give rise to a superradiant instability around spinning black holes. We study the nonlinear evolution of this instability in quadratic gravity, where quadratic curvature terms are added to the Einstein-Hilbert action. We find that as the massive spin-2 field grows, the black hole's spin increases, accelerating the growth rate, and eventually leading to a superextremal horizon. This sharply contrasts with the spin-down and eventual saturation that occurs due to the backreaction of the superradiant instability of a minimally coupled massive spin-0 or spin-1 field. |
| title | Nonlinear evolution of the spin-2 black hole superradiant instability |
| topic | General Relativity and Quantum Cosmology High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2509.13488 |