Perturbations of black holes in quadratic gravity
Abstract
Abstract We discuss the perturbations of black hole solutions in the context of quadratic gravity, including ones that differ from those predicted in General Relativity (GR). The non-GR branch of solutions only exists within a specific parameter range and is characterized by a richer spectrum of modes, since for gravitational perturbations in particular, two types of quasinormal modes emerge which we characterize as massless-led and massive-led ones. This rich spectrum of modes arises due to the specific mixing of the metric perturbations and those of an auxiliary tensor field, associated with the presence of a massive spin-2 mode in the theory. We also discuss potential excitations of the various modes in the context of observations.
Fields of Study & Subjects
Pulsars and Gravitational Waves Research
Black Holes and Theoretical Physics
Astrophysical Phenomena and Observations
Publication details
- Journal / source
- Journal of Physics Conference Series
- Publisher
- IOP Publishing
- Volume
- 3177
- Issue
- 1
- Pages
- 012029–012029
- Publication date
- 1 February 2026