Neutrino Dispersion Relations from a Dark Energy Model

Dark Energy and Neutrino Model in SUSY

We discuss the effect of the supersymmetry breaking on the Mass Varying Neutrinos(MaVaNs) scenario. Especially, the effect mediated by the gravitational interaction between the hidden sector and the dark energy sector is studied. A model including a chiral superfield in the dark sector and the right-handed neutrino superfield is proposed. Evolutions of the neutrino mass and the equation of stat...

Neutrino Condensation as Dark Energy

Motivated by the seeming coincidence of the neutrino mass scale and the dark energy scale, we propose to explain the cosmic dark energy by neutrino condensation. Similar to the idea of top-quark condensation, we assume that a four-fermion interaction for the third-family neutrino is induced from some unknown new dynamics which is strong enough to cause neutrino condensation. In the low-energy e...

Neutrino Dark Energy and Baryon Asymmetry from Higgs Sector

We propose a new model to explain the neutrino masses, the dark energy and the baryon asymmetry altogether. In this model, neutrinos naturally acquire small Majorana masses via type-II seesaw mechanism, while the pseudo-Nambu-Goldstone bosons associated with the neutrino massgeneration mechanism provide attractive candidates for dark energy. The baryon asymmetry of the universe is produced from...

A Model for Neutrino Warm Dark Matter and Neutrino Oscillations

The muonand tau-neutrinos with the mass in the keV range, which are allowed in a low reheating temperature cosmology, can compose the warm dark matter of the universe. A model of four light neutrinos including the keV scale νμ and ντ is studied, which combines the seesaw mechanism and the Abelian flavor symmetry. The atmospheric neutrino anomaly is due to the νμ − ντ oscillation. The solar neut...

Supersymmetric Theories of Neutrino Dark Energy