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Spin-Charge induced spontaneous scalarization of Kerr-Newman black holes

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arxiv 2208.11849 v2 pith:IGUEV2DN submitted 2022-08-25 gr-qc

Meng-Yun Lai , Yun Soo Myung , Rui-Hong Yue , De-Cheng Zou This is my paper
classification gr-qc
keywords blackholesscalarizationspontaneoustheoryalphaboundkerr-newman
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abstract

We investigate the tachyonic instability of Kerr-Newman (KN) black holes in the Einstein-Maxwell-scalar (EMS) theory with a positive coupling parameter $\alpha$. This corresponds to exploring the onset of spontaneous scalarization for KN black holes. For this purpose, we use the hyperboloidal foliation method (HFM) to solve the linearized scalar equation numerically. We obtain a 3D graph [$\log_{10}\alpha(a,Q)$] which indicates the onset surface for spontaneous scalarization of KN black holes in the EMS theory. We find that there is no lower bound on the rotational parameter $a$, but its upper bound is given by $M^2-Q^2 \ge a^2$. Also, we confirm that the high rotation enhances spontaneous scalarization of KN black holes in the EMS theory.

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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. Angular momentum flux through post-Newtonian order for noncircular nonspinning black-hole binaries in Einstein-Maxwell-dilaton theory

    gr-qc 2026-07 conditional novelty 6.0 of 10

    The scalar, electromagnetic, and tensor contributions to the angular momentum flux from noncircular EMd binaries are derived through 1PN order.

  2. 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.

  3. 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.

  4. 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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