Neutrino mixing contribution to the cosmological constant

Details Neutrino mixing contribution to the cosmological constant Neutrino mixing contribution to the cosmological constant

2004-02-03

arxiv.org/abs/gr-qc/0402013v1

Phys.Lett. A323 (2004) 182-189

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

7 pages

Scientific paper

10.1016/j.physleta.2004.02.004

We show that the non-perturbative vacuum structure associated with neutrino mixing leads to a non-zero contribution to the value of the cosmological constant. Such a contribution comes from the specific nature of the mixing phenomenon. Its origin is completely different from the one of the ordinary contribution of a massive spinor field. We estimate this neutrino mixing contribution by using the natural cut--off appearing in the quantum field theory formalism for neutrino mixing and oscillation.

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