# A lower bound on dark matter mass

**Authors:** Mustafa A. Amin, Mehrdad Mirbabayi  
**arXiv:** [2211.09775](https://arxiv.org/abs/2211.09775)  
**Date:** 2022-11-17  
**Summary page:** https://www.summarizepaper.com/fr/paper/2211.09775v2/

## Abstract

We argue that there is a lower bound of order $10^{-19}$ eV on dark matter mass if it is produced after inflation via a process with finite correlation length. We rely on non-detection of free-streaming suppression and white-noise enhancement of density perturbations as the observational inputs.