Mixed dark matter with neutrino chemical potentials
Astrophysics
2010-01-15 v2 High Energy Physics - Phenomenology
Abstract
Mixed dark matter models with one low-mass (e.g. 2.4eV) neutrino flavor are shown to be in good agreement with observations if the neutrinos have non-zero chemical potentials. This agreement holds (except for the problem with a low-age Universe) even for high values of the Hubble-parameter. Massless neutrinos with non-zero chemical potentials may reconcile cold dark matter with observations. Some fine-tuning is required to avoid problems with Big Bang nucleosynthesis.
Cite
@article{arxiv.astro-ph/9502052,
title = {Mixed dark matter with neutrino chemical potentials},
author = {Georg B. Larsen and Jes Madsen},
journal= {arXiv preprint arXiv:astro-ph/9502052},
year = {2010}
}
Comments
14 pages+1 figure, postscript. Physical Review D (in press)