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Bubbles kick off primordial black holes to form more binaries

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arxiv 2406.05838 v3 pith:4ABGPLYZ submitted 2024-06-09 gr-qc astro-ph.COhep-ph

Zi-Yan Yuwen , Cristian Joana , Shao-Jiang Wang , Rong-Gen Cai This is my paper · ORCID
classification gr-qcastro-ph.COhep-ph
keywords blackpbhsbinariesformholesprimordialwallabundances
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Primordial black holes (PBHs) may form before cosmological first-order phase transitions, leading to inevitable collisions between PBHs and bubble walls. In this Letter, we have simulated for the first time the co-evolution of an expanding scalar wall passing through a black hole with full numerical relativity. This black hole-bubble wall collision yields multiple far-reaching phenomena, including the PBH mass growth, gravitational wave radiations, and momentum recoil that endows PBHs with additional velocities, approximately doubling the formation rate for PBH binaries and hence strengthening the observational constraints on the PBH abundances.

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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. Vacuum bubbles from cosmic ripples

    hep-ph 2026-04 conditional novelty 6.0 of 10

    Over-densities in the early universe reduce the Euclidean action for vacuum decay, making false-vacuum bubbles nucleate earlier; under-densities do the opposite.

  2. Numerical simulations of primordial black hole formation via delayed first-order phase transitions

    gr-qc 2026-01 conditional novelty 6.0 of 10

    Spherically symmetric numerical relativity shows false-vacuum domains from delayed first-order phase transitions form type B (baby-universe) or type A (direct-collapse) primordial black holes, separated by a robust t_...

  3. Stable long-term evolution in numerical relativity

    gr-qc 2025-01 conditional novelty 6.0 of 10

    Two modified CCZ4 schemes that propagate momentum constraint violations without damping suppress a late-time instability seen in long BSSN black hole simulations.

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