Hawking-radiation-ignited autocatalytic formation of primordial black holes
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arXiv
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866914167443685376 |
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| author | Yakimenko, Alexander |
| author_facet | Yakimenko, Alexander |
| contents | We propose and analyze an autocatalytic mechanism in which bursts of Hawking radiation from evaporating micro-primordial black holes (PBHs) trigger the collapse of near-critical plasma overdensities. In a primordial plasma seeded with such patches, this feedback self organizes into a traveling ignition front that successively forms new PBHs and then self-quenches as the Universe expands. A minimal reaction-diffusion model yields conservative criteria for ignition and freeze-out and predicts a stochastic gravitational-wave background with a sharp causal low-frequency edge set by the freeze-out correlation length and largely insensitive to Planck-scale PBH endpoint microphysics. The resulting sub-Hz-to-audio band and amplitudes satisfy cosmological energy-injection bounds, providing a clean, testable target for forthcoming gravitational-wave observatories. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_18110 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Hawking-radiation-ignited autocatalytic formation of primordial black holes Yakimenko, Alexander General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics Pattern Formation and Solitons We propose and analyze an autocatalytic mechanism in which bursts of Hawking radiation from evaporating micro-primordial black holes (PBHs) trigger the collapse of near-critical plasma overdensities. In a primordial plasma seeded with such patches, this feedback self organizes into a traveling ignition front that successively forms new PBHs and then self-quenches as the Universe expands. A minimal reaction-diffusion model yields conservative criteria for ignition and freeze-out and predicts a stochastic gravitational-wave background with a sharp causal low-frequency edge set by the freeze-out correlation length and largely insensitive to Planck-scale PBH endpoint microphysics. The resulting sub-Hz-to-audio band and amplitudes satisfy cosmological energy-injection bounds, providing a clean, testable target for forthcoming gravitational-wave observatories. |
| title | Hawking-radiation-ignited autocatalytic formation of primordial black holes |
| topic | General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics Pattern Formation and Solitons |
| url | https://arxiv.org/abs/2511.18110 |