Dark dimension, the swampland, and the dark matter fraction composed of primordial black holes
| Autor: | Anchordoqui, Luis, Antoniadis, Ignatios, Lust, Dieter |
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| Přispěvatelé: | HEP, INSPIRE |
| Rok vydání: | 2022 |
| Předmět: |
High Energy Physics - Theory
Cosmology and Nongalactic Astrophysics (astro-ph.CO) Astrophysics::High Energy Astrophysical Phenomena radiation: Hawking FOS: Physical sciences Astrophysics::Cosmology and Extragalactic Astrophysics GeV dark matter [PHYS.HPHE] Physics [physics]/High Energy Physics - Phenomenology [hep-ph] General Relativity and Quantum Cosmology High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) High Energy Physics - Theory (hep-th) [PHYS.HTHE] Physics [physics]/High Energy Physics - Theory [hep-th] higher-dimensional dark energy [PHYS.ASTR] Physics [physics]/Astrophysics [astro-ph] black hole: primordial Astrophysics - Cosmology and Nongalactic Astrophysics |
| Zdroj: | Physical Review |
| ISSN: | 2470-0029 2470-0010 |
| DOI: | 10.1103/physrevd.106.086001 |
| Popis: | Very recently, it was suggested that combining the Swampland program with the smallness of the dark energy and confronting these ideas to experiment lead to the prediction of the existence of a single extra-dimension (dubbed the dark dimension) with characteristic length-scale in the micron range. We show that the rate of Hawking radiation slows down for black holes perceiving the dark dimension and discuss the impact of our findings in assessing the dark matter fraction that could be composed of primordial black holes. We demonstrate that for a species scale of ${\cal O}(10^{10}~{\rm GeV})$, an all-dark-matter interpretation in terms of primordial black holes should be feasible for masses in the range $10^{14} \leq M_{BH}/{\rm g}\leq 10^{21}$. This range is extended compared to that in the 4D theory by 3 orders of magnitude in the low mass region. We also show that PBHs with $M_{\rm BH} \sim 10^{12}~{\rm g}$ could potentially explain the well-known Galactic 511 keV gamma-ray line if they make up a tiny fraction of the total dark matter density. 16 pages, 2 figures, v3 agrees with the published version and contains one additional figure |
| Databáze: | OpenAIRE |
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