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Frozen Hayward-boson stars

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arxiv 2312.07224 v1 pith:UGYNBFEB submitted 2023-12-12 gr-qc hep-th

Yuan Yue , Yong-Qiang Wang This is my paper
classification gr-qchep-th
keywords frozenstarbardeen-bosoncriticalexcitedfieldgroundhayward-boson
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abstract

Recently, the model of the Einstein-Bardeen theory minimally coupled to a complex, massive, free scalar field was investigated in arXiv:2305.19057. The introduction of a scalar field disrupts the formation of an event horizon, leaving only a type of solution referred to as a Bardeen-boson star. When the magnetic charge $q$ exceeds a certain critical value, the frozen Bardeen-boson star can be obtained with $\omega \rightarrow 0$. In this paper, we extend to the investigation of Einstein-Hayward-scalar model, and obtain the solution of frozen Hayward-boson star, including the ground and excited states. Furthermore, under the same parameters, it is interesting to observe that both the ground state and the excited states frozen stars have the same critical horizon and mass.

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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. Internal structure of Hayward black holes

    gr-qc 2025-11 conditional novelty 5.0 of 10

    In Hayward regular black holes, a sufficiently strong scalar-field perturbation collapses the inner horizon and forms a spacelike singularity, with the horizon radius obeying a universal |p-p*|^{0.5} scaling near the ...

  2. Frozen Neutron Stars

    gr-qc 2025-09 conditional novelty 5.0 of 10

    Solving modified Tolman-Oppenheimer-Volkoff equations with Bardeen and Hayward nonlinear electrodynamics, this paper finds that neutron stars reach 'frozen states' with a critical horizon at a critical magnetic charge.

  3. 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.

  4. Hayward Boson Stars

    gr-qc 2025-08 conditional novelty 4.0 of 10

    Hayward boson stars exist only when sqrt(beta)/Q > 1.49661, exactly where the vacuum Hayward spacetime has no horizon.

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