Spin-Induced Scalarized Black Holes

Carlos A.R. Herdeiro, Eugen Radu, Hector O. Silva, Thomas P. Sotiriou, Nicolás Yunes

Research output: Contribution to journalArticlepeer-review


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, j0.5. 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.

Original languageEnglish (US)
Article number011103
JournalPhysical review letters
Issue number1
StatePublished - Jan 7 2021

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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