Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-01-10
Phys.Lett. B621 (2005) 1-10
Physics
High Energy Physics
High Energy Physics - Phenomenology
13 pages; a reference on BBN bound is added, more accurate result of the work in progress on BBN is presented; a minor typo in
Scientific paper
10.1016/j.physletb.2005.06.035
We assume that the Pauli exclusion principle is violated for neutrinos, and consequently, neutrinos obey the Bose-Einstein statistics. Cosmological and astrophysical consequences of this assumption are considered. Neutrinos may form cosmological Bose condensate which accounts for all (or a part of) the dark matter in the universe. ``Wrong'' statistics of neutrinos could modify big bang nucleosynthesis, leading to the effective number of neutrino species smaller than three. Dynamics of the supernova collapse would be influenced and spectra of the supernova neutrinos may change. The presence of neutrino condensate would enhance contributions of the Z-bursts to the flux of the UHE cosmic rays and lead to substantial refraction effects for neutrinos from remote sources. The Pauli principle violation for neutrinos can be tested in the two-neutrino double beta decay.
Dolgov Alexander. D.
Smirnov Alexei Yu.
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