Reconstructing Non-standard Cosmologies with Dark Matter
Abstract
Once dark matter has been discovered and its particle physics properties have been determined, a crucial question rises concerning how it was produced in the early Universe. If its thermally averaged annihilation cross section is in the ballpark of few cm/s, the WIMP mechanism in the standard cosmological scenario (i.e. radiation dominated Universe) will be highly favored. If this is not the case one can either consider an alternative production mechanism, or a non-standard cosmology. Here we study the dark matter production in scenarios with a non-standard expansion history. Additionally, we reconstruct the possible non-standard cosmologies that could make the WIMP mechanism viable.
Cite
@article{arxiv.1906.04183,
title = {Reconstructing Non-standard Cosmologies with Dark Matter},
author = {Paola Arias and Nicolás Bernal and Alan Herrera and Carlos Maldonado},
journal= {arXiv preprint arXiv:1906.04183},
year = {2019}
}
Comments
20 pages, 8 figures. V2: Accepted for publication in JCAP. arXiv admin note: text overlap with arXiv:1710.11006, arXiv:1804.06783 by other authors