Breakdown of Hawking Evaporation opens new Mass Window for Primordial Black Holes as Dark Matter Candidate
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866909303478157312 |
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| author | Thoss, Valentin Burkert, Andreas Kohri, Kazunori |
| author_facet | Thoss, Valentin Burkert, Andreas Kohri, Kazunori |
| contents | The energy injection through Hawking evaporation has been used to put strong constraints on primordial black holes as a dark matter candidate at masses below $10^{17}\,\rm{g}$. However, Hawking's semiclassical approximation breaks down at latest after half-decay. Beyond this point, the evaporation could be significantly suppressed, as was shown in recent work. In this study, we review existing cosmological and astrophysical bounds on primordial black holes, taking this effect into account. We show that the constraints disappear completely for a reasonable range of parameters, which opens a new window below $10^{10}\,\rm{g}$ for light primordial black holes as a dark matter candidate. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2402_17823 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Breakdown of Hawking Evaporation opens new Mass Window for Primordial Black Holes as Dark Matter Candidate Thoss, Valentin Burkert, Andreas Kohri, Kazunori Cosmology and Nongalactic Astrophysics High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology High Energy Physics - Phenomenology High Energy Physics - Theory The energy injection through Hawking evaporation has been used to put strong constraints on primordial black holes as a dark matter candidate at masses below $10^{17}\,\rm{g}$. However, Hawking's semiclassical approximation breaks down at latest after half-decay. Beyond this point, the evaporation could be significantly suppressed, as was shown in recent work. In this study, we review existing cosmological and astrophysical bounds on primordial black holes, taking this effect into account. We show that the constraints disappear completely for a reasonable range of parameters, which opens a new window below $10^{10}\,\rm{g}$ for light primordial black holes as a dark matter candidate. |
| title | Breakdown of Hawking Evaporation opens new Mass Window for Primordial Black Holes as Dark Matter Candidate |
| topic | Cosmology and Nongalactic Astrophysics High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology High Energy Physics - Phenomenology High Energy Physics - Theory |
| url | https://arxiv.org/abs/2402.17823 |