Year: 2025
Type: preprint
Abstract: 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.
Source: arXiv (Cornell University)
Authors: May, Taillte, East, William E.
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4415318312
Cites:
Cited by:
Related to: