Coupling between cold dark matter and dark energy from neutrino mass experiments
Feb, 2009
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Abstract: (arXiv)
We consider cosmological models with dynamical Dark Energy (dDE) coupled to cold dark matter (CDM), while simultaneously allowing neutrinos to be massive. Using a Monte Carlo Markov Chain approach, we compare these models with a wide range of cosmological data sets and find a strong correlation between this coupling strength and the neutrino mass. We proceed with adding priors on the neutrino mass from earth-based neutrino mass experiments. If we accept the claimed detection of neutrino mass from the Heidelberg-Moscow neutrinoless double -decay experiment, this implies a 5 - 6 detection of a CDM-DE coupling, depending on the dDE potential. We also find that a detection of a sufficiently high neutrino mass from coming KATRIN tritium -decay experiment will imply a similar detection of a coupling in the dark sector.- Cosmology
- Cosmic microwave background
- Cosmological parameters
- Dark matter
- neutrino: mass
- dark matter
- dark energy: coupling
- double-beta decay: (0neutrino)
- Monte Carlo: Markov chain
- tritium: semileptonic decay
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