Primordial black hole formation by vacuum bubbles
By Heling Deng, A. Vilenkin. 2017
151 citations recorded by the source corpus.
Vacuum bubbles may nucleate during the inflationary epoch and expand, reaching relativistic speeds. After inflation ends, the bubbles are quickly slowed down, transferring their momentum to a shock wave that propagates outwards in the radiation background. The ultimate fate of the bubble depends on its size. Bubbles smaller than certain critical size collapse to ordinary black holes, while in the supercritical case the bubble interior inflates, forming a baby universe, which is connected to the exterior region by a wormhole. The wormhole then closes up, turning into two black holes at its two mouths. We use numerical simulations to find the masses of black holes formed in this scenario, both in subcritical and supercritical regime. The resulting mass spectrum is extremely broad, ranging over many orders of magnitude. For some parameter values, these black holes can serve as seeds for supermassive black holes and may account for LIGO observations.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/fe65e719ec867a1e8ef00d87f82ad74430a79f2b
How researchers see this paper
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In Astronomy and Astrophysics
- Michela Mapelli
- D. Holz
- Mario Spera
- N. Giacobbo
- Maya Fishbach
- Ilya Mandel
- Bernard F. Schutz
- E. Thrane
In Nuclear and High Energy Physics
- Michela Mapelli
- Florian Kuhnel
- Mario Spera
- T. Hinderer
- Tania Regimbau
- D. Holz
- B. Carr
- Bernard F. Schutz
Citations in the corpus
- A Brief Review on Primordial Black Holes as Dark Matter (2021, background): “There are, however, other scenarios which naturally predict a population of PBHs as a result of phase transitions in the early Universe and by the collapse of topological defects (Hawking et al., 1982; Hawking, 1989; Polnarev and Zembowicz, 1991; Garriga et al., 2016; Deng et al., 2017; Deng and Vil”
- Search for sub-solar mass ultracompact binaries in Advanced LIGO's second observing run (2019, background): “An alternative inflationary mechanism proposes that vacuum bubbles nucleated during inflation may result in black holes (with masses that can be around a solar mass) after inflation ends [28].”
- Clusters of Primordial Black Holes (2018, background): “[63] H.”
- Primordial Black Holes as Dark Matter: Recent Developments (2020, background): “[131] Heling Deng and Alexander Vilenkin, “Primordial black hole formation by vacuum bubbles,” JCAP 1712, 044 (2017), arXiv:1710.”
- Primordial black holes as dark matter candidates (2021, background): “In this case, the PBH mass function would be very broad and extend to very high masses [93,94].”