Amin, Mustafa A.Mirbabayi, Mehrdad2024-08-022024-08-022024Amin, M. A., & Mirbabayi, M. (2024). A Lower Bound on Dark Matter Mass. Physical Review Letters, 132(22), 221004. https://doi.org/10.1103/PhysRevLett.132.221004https://hdl.handle.net/1911/117564We 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 nondetection of free-streaming suppression and white-noise enhancement of density perturbations as the observational inputs.engExcept where otherwise noted, this work is licensed under a Creative Commons Attribution (CC BY) license.  Permission to reuse, publish, or reproduce the work beyond the terms of the license or beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.Journal articlePhysRevLett-132-221004https://doi.org/10.1103/PhysRevLett.132.221004