Light Dark Photon Dark Matter from Inflation
High Energy Physics - Phenomenology
2021-02-03 v2 Cosmology and Nongalactic Astrophysics
General Relativity and Quantum Cosmology
High Energy Physics - Theory
Abstract
We discuss the possibility of producing a light dark photon dark matter through a coupling between the dark photon field and the inflaton. The dark photon with a large wavelength is efficiently produced due to the inflaton motion during inflation and becomes non-relativistic before the time of matter-radiation equality. We compute the amount of production analytically. The correct relic abundance is realized with a dark photon mass extending down to .
Cite
@article{arxiv.2004.10743,
title = {Light Dark Photon Dark Matter from Inflation},
author = {Yuichiro Nakai and Ryo Namba and Ziwei Wang},
journal= {arXiv preprint arXiv:2004.10743},
year = {2021}
}
Comments
24 pages, 2 figures