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Super-critical primordial black hole formation via delayed first-order electroweak phase transition
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Super-critical primordial black hole formation via delayed first-order electroweak phase transition
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The delay of the first-order electroweak phase transitions (EWPT) may lead to the emergence of baby universes inside wormhole structures due to the large vacuum energy density in false vacuum domains. Observers outside the false vacuum domains observe them as primordial black holes (PBHs), categorized as super-critical PBHs. We specifically investigate the dynamics of PBH formation due to delayed first-order EWPTs by solving the equations of bubble wall dynamics. We numerically confirm that such super-critical PBHs can be formed by the delayed first-order EWPT assuming spherically symmetric false vacuum domains with the thin-wall approximation for its boundary. Our numerical results show that a PBH formation criterion utilizing characteristic timescales is more appropriate than the conventional criterion based on density fluctuations. Employing our numerical results, we update the parameter regions of new physics models which can be explored by current and future constraints on the PBH abundance.
Forward citations
Cited by 12 Pith papers
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Gravitational Waves from Black Hole Reheating: The Scalar-Induced Component
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Numerical simulations of primordial black hole formation via delayed first-order phase transitions
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Complementarity of gravitational wave analyses and di-Higgs production in the exploration of the Electroweak Phase Transition dynamics in the RxSM
In the real singlet extension of the SM, strong first-order electroweak phase transitions split into singlet-driven transitions (loud in gravitational waves, quiet at colliders) and doublet-driven transitions (visible...
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Curvature Perturbations from First-Order Phase Transitions: Implications to Black Holes and Gravitational Waves
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PBH formation and Gravitational Waves as Multi-messenger Signals of First-order Phase Transitions
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Slow reheating after a supercooled first-order phase transition allows an early matter-dominated era in which small curvature perturbations grow sufficiently to form primordial black holes.
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