• Corpus ID: 5809880

Hidden Hot Dark Matter as Cold Dark Matter

  title={Hidden Hot Dark Matter as Cold Dark Matter},
  author={Kris Sigurdson},
  journal={arXiv: Cosmology and Nongalactic Astrophysics},
  • K. Sigurdson
  • Published 14 December 2009
  • Physics
  • arXiv: Cosmology and Nongalactic Astrophysics
We show that hidden hot dark matter, hidden-sector dark matter with interactions that decouple when it is relativistic, is a viable dark matter candidate provided it has never been in thermal equilibrium with the particles of the standard model. This hidden hot dark matter may reheat to a lower temperature and number density than the visible Universe and thus account, simply with its thermal abundance, for all the dark matter in the Universe while evading the typical constraints on hot… 

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