Neutrino mass, dark matter and inflation

Details Neutrino mass, dark matter and inflation Neutrino mass, dark matter and inflation

2004-03-30

arxiv.org/abs/hep-ph/0403291v1

Phys.Rev. D70 (2004) 033015

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 4 figures

Scientific paper

10.1103/PhysRevD.70.033015

We show that spontaneous breaking of global $B-L$ symmetry responsible for small neutrino masses via the seesaw mechanism provides a unified picture of hybrid inflation and dark matter if the scale of $B-L$ breaking is close to the GUT scale. The majoron which acquires a small mass in the milli-eV range due to Planck scale breaking of $B-L$ is the dark matter candidate. The coupling of the majoron field to the neutrino induces a small violation of CPT and Lorentz invariance at the present epoch. We discuss some of the phenomenological and cosmological implications of the model.

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