2019/06/30 by Stefano Savastano, Luca Amendola, Javier Rubio +1 · 1 citation
Physics and Astronomy · #astro-ph.CO #gr-qc #hep-th
paper · pdf · doi:10.1103/physrevd.100.083518
published as Phys. Rev. D 100, 083518 (2019) · 14 pages, 10 figures, published version, added clarifications and references, corrected typos
arxiv created 2019/10/15 · arxiv updated 2019/10/17
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.