Spin-Induced Scalarized Black Holes

Herdeiro, Carlos A.?R.; Radu, Eugen; Silva, Hector O.; Sotiriou, Thomas P.; Yunes, Nicol�s

Abstract

It was recently shown that a scalar field suitably coupled to the Gauss-Bonnet invariant G can undergo a spin-induced linear tachyonic instability near a Kerr black hole. This instability appears only once the dimensionless spin j is sufficiently large, that is, j≳0.5. A tachyonic instability is the hallmark of spontaneous scalarization. Focusing, for illustrative purposes, on a class of theories that do exhibit this instability, we show that stationary, rotating black hole solutions do indeed have scalar hair once the spin-induced instability threshold is exceeded, while black holes that lie below the threshold are described by the Kerr solution. Our results provide strong support for spin-induced black hole scalarization.

Citation

Herdeiro, C. A., Radu, E., Silva, H. O., Sotiriou, T. P., & Yunes, N. (2021). Spin-Induced Scalarized Black Holes. Physical Review Letters, 126(1), Article 011103. https://doi.org/10.1103/PhysRevLett.126.011103

• Journal Article Type: Article
• Acceptance Date: Nov 20, 2020
• Online Publication Date: Jan 8, 2021
• Publication Date: Jan 7, 2021
• Deposit Date: Feb 2, 2021
• Publicly Available Date: Feb 16, 2021
• Journal: Physical Review Letters
• Print ISSN: 0031-9007
• Electronic ISSN: 1079-7114
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 126
• Issue: 1
• Article Number: 011103
• DOI: https://doi.org/10.1103/PhysRevLett.126.011103
• Keywords: General Physics and Astronomy
• Public URL: https://nottingham-repository.worktribe.com/output/5287607
• Publisher URL: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.126.011103