Work

Linear perturbations of Kerr black hole in quadratic gravity

Year: 2025

Type: article

Abstract: Employing the Newman-Penrose formalism and following the classic Teukolsky-like approach, we linearize the field equations of quadratic gravity on the Kerr background and combine them with the linearized Ricci and Bianchi identities. This leads to constraints on linear perturbations of the Kerr spacetime in quadratic gravity. The resulting differential equations are decoupled in such a way that only the Ricci tensor perturbations need to be found on the Kerr background in order to fully determine the solution. The results are illustrated in the simple nontrivial cases of the Schwarzschild and Minkowski geometries.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/w3y1-ydq5

Authors: Šimon Knoška, David Kofroň, Robert Švarc

Institution: Charles University

Language: English

Topic: Black Holes and Theoretical Physics

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Univerzita Karlova v Praze, Grantová Agentura, Univerzita Karlova, Grantová Agentura České Republiky

Awards: G1521873858, Hidden Symmetries and Black Hole Chemistry, Black hole spacetimes in a general dimension, their properties and interpretation, G5388886926, G6381617199