Big-bang nucleosynthesis constraints on dark-matter sectors revisited
Cosmology and Nongalactic Astrophysics
2017-04-28 v1 High Energy Physics - Phenomenology
Nuclear Theory
Abstract
We extend previous studies of big bang nucleosynthesis, with the assumption that ordinary matter and dark matter sectors are entangled through the number of degrees of freedom entering the Friedmann equations. This conjecture allows us to find a relation between the temperatures of the weakly interacting matter and dark-matter sectors. The constraints imposed by observations are studied by comparison with calculations of big bang nucleosynthesis for the abundance of light elements. It is found that these constraints are compatible with cold dark matter and a wide range number of dark sectors.
Keywords
Cite
@article{arxiv.1704.07803,
title = {Big-bang nucleosynthesis constraints on dark-matter sectors revisited},
author = {C. A. Bertulani and V. Challa and J. J. He and S. Q. Hou and Ravinder Kumar},
journal= {arXiv preprint arXiv:1704.07803},
year = {2017}
}
Comments
7 pages, 2 figures