Primordial dark matter halos from fifth forces
Cosmology and Nongalactic Astrophysics
2019-10-17 v2 General Relativity and Quantum Cosmology
High Energy Physics - Theory
Abstract
We argue that primordial dark matter halos could be generated during radiation domination by long range attractive forces stronger than gravity. In this paper we derive the conditions under which these structures could dominate the dark matter content of the Universe while passing microlensing constraints and cosmic microwave background energy injection bounds. The dark matter particles would be clumped in objects in the solar mass range with typical sizes of the order of the solar system. Consequences for direct dark matter searches are important.
Cite
@article{arxiv.1906.05300,
title = {Primordial dark matter halos from fifth forces},
author = {Stefano Savastano and Luca Amendola and Javier Rubio and Christof Wetterich},
journal= {arXiv preprint arXiv:1906.05300},
year = {2019}
}
Comments
14 pages, 10 figures, published version, added clarifications and references, corrected typos