The Primordial Black Hole Abundance: The Broader, the Better
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arXiv
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| Auteurs principaux: | , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866914851113140224 |
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| author | Ianniccari, A. Iovino, A. J. Kehagias, A. Perrone, D. Riotto, A. |
| author_facet | Ianniccari, A. Iovino, A. J. Kehagias, A. Perrone, D. Riotto, A. |
| contents | We show that the abundance of primordial black holes, if formed through the collapse of large fluctuations generated during inflation and unless the power spectrum of the curvature perturbation is very peaked, is always dominated by the broadest profile of the compaction function, even though statistically it is not the most frequent. The corresponding threshold is therefore 2/5. This result exacerbates the tension when combining the primordial black hole abundance with the signal seen by pulsar timing arrays and originated from gravitational waves induced by the same large primordial perturbations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_11033 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | The Primordial Black Hole Abundance: The Broader, the Better Ianniccari, A. Iovino, A. J. Kehagias, A. Perrone, D. Riotto, A. Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Phenomenology We show that the abundance of primordial black holes, if formed through the collapse of large fluctuations generated during inflation and unless the power spectrum of the curvature perturbation is very peaked, is always dominated by the broadest profile of the compaction function, even though statistically it is not the most frequent. The corresponding threshold is therefore 2/5. This result exacerbates the tension when combining the primordial black hole abundance with the signal seen by pulsar timing arrays and originated from gravitational waves induced by the same large primordial perturbations. |
| title | The Primordial Black Hole Abundance: The Broader, the Better |
| topic | Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2402.11033 |