Dark Matter from freeze-in and its inhomogeneities
High Energy Physics - Phenomenology
2024-01-19 v2 Cosmology and Nongalactic Astrophysics
Abstract
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.
Keywords
Cite
@article{arxiv.2211.08359,
title = {Dark Matter from freeze-in and its inhomogeneities},
author = {Alessandro Strumia},
journal= {arXiv preprint arXiv:2211.08359},
year = {2024}
}
Comments
8 pages. Published on JHEP