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Quasinormal modes of rapidly rotating Einstein-Gauss-Bonnet-dilaton black holes

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arxiv 2407.20760 v3 pith:AZHQ2BQE submitted 2024-07-30 gr-qc hep-th

Jose Luis Blázquez-Salcedo , Fech Scen Khoo , Burkhard Kleihaus , Jutta Kunz This is my paper · ORCID
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keywords modesblackholesquasinormalcouplingrapidlyrotatingeinstein-gauss-bonnet-dilaton
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Quasinormal modes of rapidly rotating black holes are crucial in understanding the ringdown phase after a merger. While for Kerr black holes these modes have been known for a long time, their calculation has remained a challenge in alternative theories of gravity. We obtain the spectrum of quasinormal modes of rapidly rotating black holes in Einstein-Gauss-Bonnet-dilaton theory without resorting to perturbation theory in the coupling constant. Our approach is based on a spectral decomposition of the linear perturbations of the metric and the scalar field. The quasinormal modes agree excellently with the perturbatively known slow rotation and weak coupling limits. For large coupling, though, the spectrum changes significantly.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Functional inference on deviations from General Relativity

    gr-qc 2025-07 conditional novelty 6.0 of 10

    GRANITA reconstructs functional, parameter-dependent deviations from General Relativity in gravitational-wave data using Gaussian process regression with free node values.

  2. Ringdown Analysis of Rotating Black Holes in Effective Field Theory Extensions of General Relativity

    gr-qc 2024-11 conditional novelty 6.0 of 10

    No evidence of higher-derivative EFT corrections in black hole ringdown spectra from GWTC-3; new physics length scale constrained to ℓ ≲ 35 km.

  3. Constraining deviations from the Teukolsky equation with GW250114

    gr-qc 2026-07 conditional novelty 5.0 of 10

    GW250114's fundamental ringdown mode bounds theory-agnostic deviations from the Teukolsky equation to be consistent with zero at characteristic scales of 60-100 km.

  4. Can We Detect Deviations from Einstein's Gravity in Black Hole Ringdowns?

    gr-qc 2024-11 conditional novelty 4.0 of 10

    Higher-derivative corrections to black hole ringdown spectra and quadratic modes are either absent or suppressed below detectability once causality is enforced, leaving Einstein's gravity as the sole observable description.

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