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Spin-induced black hole spontaneous scalarization

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arxiv 2006.03095 v4 pith:YYOHYA4K submitted 2020-06-04 gr-qc astro-ph.HEhep-th

Alexandru Dima , Enrico Barausse , Nicola Franchini , Thomas P. Sotiriou This is my paper
classification gr-qcastro-ph.HEhep-th
keywords blackholescalargeneralhairinstabilityrelativityscalarization
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abstract

We study scalar fields in a black hole background and show that, when the scalar is suitably coupled to curvature, rapid rotation can induce a tachyonic instability. This instability, which is the hallmark of spontaneous scalarization in the linearized regime, is expected to be quenched by nonlinearities and endow the black hole with scalar hair. Hence, our results demonstrate the existence of a broad class of theories that share the same stationary black hole solutions with general relativity at low spins, but which exhibit black hole hair at sufficiently high spins ($a/M\gtrsim 0.5$). This result has clear implications for tests of general relativity and the nature of black holes with gravitational and electromagnetic observations.

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Cited by 8 Pith papers

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

  1. Signatures from metastable oppositely-charged black hole binaries in scalar Gauss-Bonnet gravity

    gr-qc 2025-05 conditional novelty 7.0 of 10

    In scalar Gauss-Bonnet gravity, inspiraling black holes with opposite scalar charges can undergo a sudden charge-flip, changing scalar radiation from dipolar to quadrupolar and inducing orbital eccentricity.

  2. Curvature-induced scalarization of charged AdS black holes

    gr-qc 2026-06 unverdicted novelty 6.0 of 10

    The Breitenlohner-Freedman bound restricts Gauss-Bonnet scalarization of RN-AdS black holes to a single fundamental branch for 0<η<2.25, with a separate single branch for η<0.

  3. Spin-up and mass-gain in hyperbolic encounters of spinning black holes

    gr-qc 2025-10 unverdicted novelty 6.0 of 10

    Scattering black holes gain spin and mass by absorbing emitted gravitational radiation, with spin-up up to 0.3 and mass gain up to 15% in near-threshold encounters.

  4. Supermassive black hole scalarization and effective field theory

    gr-qc 2025-06 accept novelty 6.0 of 10

    A canonical two-scalar EFT cannot naturally produce supermassive-only black hole scalarization, because the generated G^2 term has the wrong sign and is suppressed.

  5. Spin-induced Scalarized Black Holes in Einstein-Maxwell-scalar Models

    gr-qc 2025-06 conditional novelty 6.0 of 10

    Spin-induced scalarized Kerr-Newman black holes are constructed numerically for negative coupling, and they coexist with stable, entropically favored Kerr-Newman black holes.

  6. Scalarization of Bardeen spacetime

    gr-qc 2025-09 conditional novelty 5.0 of 10

    For scalarization of the full Bardeen spacetime, small magnetic charges give the usual smooth scalarization threshold, while large charges end in a 'frozen' horizonless scalarized state rather than a Bardeen black hole.

  7. Quantum parameter-mass induced scalarization of qOS-black hole in the Einstein-Gauss-Bonnet-scalar theory

    gr-qc 2025-05 conditional novelty 5.0 of 10

    For the quantum Oppenheimer-Snyder black hole, the heat capacity Davies points coincide exactly with the critical onset values for spontaneous scalarization in Einstein-Gauss-Bonnet-scalar gravity.

  8. Two scalarizations of magnetically charged black holes

    gr-qc 2025-07 conditional novelty 4.0 of 10

    For a magnetically charged black hole in Einstein-Gauss-Bonnet-scalar theory with nonlinear electrodynamics, the paper derives thermodynamic relations, finds shadow-based mass constraints, and predicts two scalarizati...

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