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hep-ph2000
On the chaoticity of active-sterile neutrino oscillations in the early universe
Poul-Erik N. Braad, Steen Hannestad
We have investigated the evolution of the neutrino asymmetry in active-sterile neutrino oscillations in the early universe. We find that there are large regions of parameter space…
astro-ph2000
Massive warm dark matter
Steen Hannestad
Many independent high resolution simulations have indicated that the standard collisionless cold dark matter model does not reproduce the structure of observed present day galaxies…
astro-ph2000
Can dark matter see itself?
Steen Hannestad
Many independent high-resolution simulations of structure formation in cold dark matter models show that galactic halos should have singular core profiles. This is in stark contras…