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Dynamical evolution of fermion-boson stars with realistic equations of state

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arxiv 2206.07715 v1 pith:TTPR3J4Q submitted 2022-06-15 gr-qc astro-ph.HEhep-phnucl-th

classification gr-qcastro-ph.HEhep-phnucl-th
keywords solutionsfermion-bosonmatterperturbedstablestarsstaticconfiguration
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Fermion-boson stars are mixtures of the ordinary nuclear matter of a neutron star and bosonic dark matter. We dynamically evolve fermion-boson stars for the first time using a realistic equation of state for nuclear matter. We use our dynamical solutions to make a detailed study of the evolution of weakly and strongly perturbed static solutions. As examples of our findings, we identify a region of parameter space where weakly perturbed unstable static solutions migrate to a stable configuration and we determine the criteria under which strongly perturbed stable static solutions will always move to a stable configuration instead of collapsing to a black hole.

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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. Radial spectra and dynamical signatures of excited boson stars

    gr-qc 2026-08 conditional novelty 6.0 of 10

    For excited boson stars, the first zero of the fundamental radial mode matches the first critical point of mass, charge, and binding energy for all tested node numbers and self-interactions.

  2. Rotating Fermion-Boson Stars in $R$-squared Gravity

    gr-qc 2026-07 conditional novelty 6.0 of 10

    R-squared gravity enlarges the equilibrium domain of rotating fermion-boson stars and raises static and Keplerian maximum masses relative to GR while remaining compatible with current compact-object constraints.

  3. Testing bosonic dark matter through white dwarf mass measurements

    astro-ph.HE 2025-10 conditional novelty 5.0 of 10

    Adding a bosonic dark-matter core to white dwarf models reproduces the observed electromagnetic-vs-redshift mass discrepancies and the data favor a boson mass near 10^-10 eV.

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