Dark Matter from freeze-in and its inhomogeneities
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arXiv
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| Format: | Preprint |
| Published: |
2022
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| _version_ | 1866913199186509824 |
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| author | Strumia, Alessandro |
| author_facet | Strumia, Alessandro |
| contents | We consider generic freeze-in processes for generation of Dark Matter, together with the consequent re-thermalization of the Standard Model fluid. We find that Dark Matter inherits the Standard Model adiabatic inhomogeneities on the cosmological scales probed by current observations, that were super-horizon during freeze-in. Thereby, freeze-in satisfies the bounds on iso-curvature perturbations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2211_08359 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Dark Matter from freeze-in and its inhomogeneities Strumia, Alessandro High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics We consider generic freeze-in processes for generation of Dark Matter, together with the consequent re-thermalization of the Standard Model fluid. We find that Dark Matter inherits the Standard Model adiabatic inhomogeneities on the cosmological scales probed by current observations, that were super-horizon during freeze-in. Thereby, freeze-in satisfies the bounds on iso-curvature perturbations. |
| title | Dark Matter from freeze-in and its inhomogeneities |
| topic | High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2211.08359 |