Growing neutrino cosmology

Details Growing neutrino cosmology Growing neutrino cosmology

2009-05-05

arxiv.org/abs/0905.0715v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

To appear in the proceedings of the XIII International Workshop on Neutrino Telescopes, Venice 2009

Scientific paper

In growing neutrino models, the neutrino mass increases in time and stops the dynamical evolution of a dark energy scalar field, thus explaining the 'why now' problem. A new attractive force, mediated by the 'cosmon' scalar field, makes non relativistic neutrino form lumps on the scales of superclusters and beyond. Nonlinear neutrino lumps are predicted to form at redshift z ~ 1 and, if observed, could be an indication for a new attractive force stronger than gravity.

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