A Lower Bound on Dark Matter Mass

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 nondetection of free-streaming suppression and white-noise enhancement of density perturbations as the observational inputs.

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Bibliographic Details
Published in:Physical review letters 2024-05, Vol.132 (22), p.221004, Article 221004
Main Authors: Amin, Mustafa A, Mirbabayi, Mehrdad
Format: Article
Language:English
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Summary: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 nondetection of free-streaming suppression and white-noise enhancement of density perturbations as the observational inputs.
ISSN:0031-9007
1079-7114
1079-7114
DOI:10.1103/PhysRevLett.132.221004