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Spinning black holes in Einstein--Gauss-Bonnet--dilaton theory: non-perturbative solutions

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arxiv 1511.05513 v1 pith:ZTNHQ66L submitted 2015-11-17 gr-qc hep-th

Burkhard Kleihaus , Jutta Kunz , Sindy Mojica , Eugen Radu This is my paper
classification gr-qchep-th
keywords blackholessolutionsfieldkerregbdeinstein--gauss-bonnet--dilatonhorizon
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We present an investigation of spinning black holes in Einstein--Gauss-Bonnet--dilaton (EGBd) theory. The solutions are found within a non-perturbative approach, by directly solving the field equations. These stationary axially symmetric black holes are asymptotically flat. They possess a non-trivial scalar field outside their regular event horizon. We present an overview of the parameter space of the solutions together with a study of their basic properties. We point out that the EGBd black holes can exhibit some physical differences when compared to the Kerr solution. For example, their mass is always bounded from below, while their angular momentum can exceed the Kerr bound, Also, in contrast to the Kerr case, the extremal solutions are singular, with the scalar field diverging on the horizon.

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Cited by 3 Pith papers

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

  1. Challenges in the nonlinear evolution of unequal mass binaries in sGB gravity

    gr-qc 2025-07 conditional novelty 6.0 of 10

    First full merger simulations of 2:1 and 3:1 black hole binaries in scalar-Gauss-Bonnet gravity, with weak-coupling dephasing matching PN predictions but strong-coupling results limited by initial-data transients.

  2. Extreme mass-ratio inspiral within an ultralight scalar cloud I. Scalar radiation

    gr-qc 2025-07 conditional novelty 6.0 of 10

    Scalar radiation from an EMRI in an ultralight scalar cloud is computed semi-analytically, showing dipole clouds decelerate and quadrupole clouds accelerate the inspiral, with up to about 100 rad dephasing after 18 months.

  3. Leading effective field theory corrections to the Kerr metric at all spins

    gr-qc 2025-12 unverdicted novelty 5.0 of 10

    Numerical solutions show that leading effective-field-theory corrections to the Kerr metric grow with spin and are largest near extremality.

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