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Asymptotically flat, spherical, self-interacting scalar, Dirac and Proca stars

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arxiv 2012.03595 v1 pith:XNUKUWX2 submitted 2020-12-07 gr-qc hep-th

Carlos A. R. Herdeiro , Eugen Radu This is my paper · ORCID
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abstract

We present a comparative analysis of the self-gravitating solitons arising in the Einstein-Klein-Gordon, Einstein-Dirac and Einstein-Proca models, for the particular case of static, spherically symmetric spacetimes. Differently from the previous study arXiv:1708.05674, the matter fields possess suitable self-interacting terms in the Lagrangians, which allow for the existence of $Q$-ball--type solutions for these models in the flat spacetime limit. In spite of this important difference, our analysis shows that the high degree of universality observed in arXiv:1708.05674 remains, and various spin-independent common patterns are observed.

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Cited by 5 Pith papers

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

  1. Extreme mass-ratio inspirals into Newtonian Proca stars

    gr-qc 2026-07 accept novelty 6.0 of 10

    For Newtonian Proca stars, a perturbing object on a circular orbit loses nearly the same energy in the vector ground state as in the scalar boson-star ground state (within ~20%), while the spherical excited Proca stat...

  2. Nonrelativistic Proca stars: Spherical stationary and multi-frequency states

    gr-qc 2024-12 conditional novelty 6.0 of 10

    Nonrelativistic Proca stars have a ground state with constant polarization (linear or circular depending on the sign of the spin-spin coupling), and a symmetry-enhanced sector with λs=0 contains a continuum of multi-f...

  3. Proca stars in excited states

    gr-qc 2024-11 conditional novelty 6.0 of 10

    Excited Proca stars are always unstable: under perturbations they collapse, disperse, or migrate to the ground state, with migration possible only for a narrow set of negative-binding-energy configurations.

  4. The continuum spectrum of nonrelativistic multi-frequency Proca stars

    gr-qc 2026-03 conditional novelty 5.5 of 10

    At fixed particle number, spherical multi-frequency Proca stars form continuous 1- and 2-parameter families interpolating between discrete stationary states, and a subset with a nodeless component is linearly stable.

  5. Bardeen Spacetime with Charged Dirac Field

    gr-qc 2024-11 conditional novelty 4.0 of 10

    Charged Dirac stars in Bardeen spacetime have a magnetic-charge-dependent critical charge, and frozen star solutions form when the effective frequency omega - q c_c tends to zero.

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