• Corpus ID: 5809880

Hidden Hot Dark Matter as Cold Dark Matter

@article{Sigurdson2009HiddenHD,
  title={Hidden Hot Dark Matter as Cold Dark Matter},
  author={Kris Sigurdson},
  journal={arXiv: Cosmology and Nongalactic Astrophysics},
  year={2009}
}
  • 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… 

Figures from this paper

Dark Matter from Exponential Growth.

It is demonstrated that this mechanism complements freeze-in and freeze-out production in a generic way, opening new parameter space to explain the observed DM abundance, and it is discussed observational prospects for such scenarios.

New production mechanism for keV sterile neutrino Dark Matter by decays of frozen-in scalars

We propose a new production mechanism for keV sterile neutrino Dark Matter. In our setting, we assume the existence of a scalar singlet particle which never entered thermal equilibrium in the early

Simply split SIMPs

Dark Matter which interacts strongly with itself, but only feebly with the Standard Model is a possibility that has been entertained to solve apparent small-scale structure problems that are

Reheating in two-sector cosmology

We analyze reheating scenarios where a hidden sector is populated during reheating along with the sector containing the Standard Model. We numerically solve the Boltzmann equations describing

Pandemic Dark Matter

Torsten Bringmann, ∗ Paul Frederik Depta, † Marco Hufnagel, ‡ Joshua T. Ruderman, 2, 5, § and Kai Schmidt-Hoberg ¶ Department of Physics, University of Oslo, Box 1048, N-0316 Oslo, Norway Deutsches

Spin mixing mechanism in amplitude analysis of pi(-)p->pi(-)pi(+)n and a new view of dark matter

We present the first amplitude analysis of the CERN data on pi(-)p->pi(-)pi(+)n on polarized target at 17.2 GeV/c for dipion masses 580-1080 MeV at low momentum transfer using spin mixing mechanism.