More Axion Stars from Strings
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arXiv
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866914917935742976 |
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| author | Gorghetto, Marco Hardy, Edward Villadoro, Giovanni |
| author_facet | Gorghetto, Marco Hardy, Edward Villadoro, Giovanni |
| contents | We show that if dark matter consists of QCD axions in the post-inflationary scenario more than ten percent of it efficiently collapses into Bose stars at matter-radiation equality. Such a result is mostly independent of the present uncertainties on the axion mass. This large population of solitons, with asteroid masses and Earth-Moon distance sizes, might plausibly survive until today, with potentially interesting implications for phenomenology and experimental searches. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_19389 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | More Axion Stars from Strings Gorghetto, Marco Hardy, Edward Villadoro, Giovanni High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics High Energy Physics - Theory We show that if dark matter consists of QCD axions in the post-inflationary scenario more than ten percent of it efficiently collapses into Bose stars at matter-radiation equality. Such a result is mostly independent of the present uncertainties on the axion mass. This large population of solitons, with asteroid masses and Earth-Moon distance sizes, might plausibly survive until today, with potentially interesting implications for phenomenology and experimental searches. |
| title | More Axion Stars from Strings |
| topic | High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics High Energy Physics - Theory |
| url | https://arxiv.org/abs/2405.19389 |