Primordial dark matter from curvature induced symmetry breaking
Abstract
We demonstrate that adiabatic dark matter can be generated by gravity induced symmetry breaking during inflation. We study a Z2 symmetric scalar singlet that couples to other fields only through gravity and for which the symmetry is broken by the spacetime curvature during inflation when the non-minimal coupling ξ is negative. We find that the symmetry breaking leads to the formation of adiabatic dark matter with the observed abundance for the singlet mass m~MeV and |ξ|~ 1.
Main Authors
Format
Articles
Research article
Published
2020
Series
Subjects
Publication in research information system
Publisher
IOP Publishing
The permanent address of the publication
https://urn.fi/URN:NBN:fi:jyu-202008195595Käytä tätä linkitykseen.
Review status
Peer reviewed
ISSN
1475-7516
DOI
https://doi.org/10.1088/1475-7516/2020/08/002
Language
English
Published in
Journal of Cosmology and Astroparticle Physics
Citation
- Laulumaa, L., Markkanen, T., & Nurmi, S. (2020). Primordial dark matter from curvature induced symmetry breaking. Journal of Cosmology and Astroparticle Physics, 2020, Article 002. https://doi.org/10.1088/1475-7516/2020/08/002
License
Copyright© 2020 IOP Publishing