Is dark matter with long-range interactions a solution to all small-scale problems of \Lambda CDM cosmology?
Cosmology and Nongalactic Astrophysics
2012-12-07 v2 High Energy Physics - Phenomenology
Abstract
The cold dark matter (DM) paradigm describes the large-scale structure of the universe remarkably well. However, there exists some tension with the observed abundances and internal density structures of both field dwarf galaxies and galactic satellites. Here, we demonstrate that a simple class of DM models may offer a viable solution to all of these problems simultaneously. Their key phenomenological properties are velocity-dependent self-interactions mediated by a light vector messenger and thermal production with much later kinetic decoupling than in the standard case.
Cite
@article{arxiv.1205.5809,
title = {Is dark matter with long-range interactions a solution to all small-scale problems of \Lambda CDM cosmology?},
author = {Laura G. van den Aarssen and Torsten Bringmann and Christoph Pfrommer},
journal= {arXiv preprint arXiv:1205.5809},
year = {2012}
}
Comments
revtex4; 6 pages, 3 figures; minor changes to match published version