http://arxiv.org/abs/2211.09775
We argue that there is a lower bound of order $10^{-18}$ eV on dark matter mass if it is produced after inflation via a process with finite correlation length.
M. Amin and M. Mirbabayi
Fri, 18 Nov 22
6/70
Comments: v1: 3 pages, 1 figure + appendices (4 pages)