Possible violation of the spin-statistics relation for neutrinos: Cosmological and astrophysical consequences

@article{Dolgov2005PossibleVO,
  title={Possible violation of the spin-statistics relation for neutrinos: Cosmological and astrophysical consequences},
  author={Alexander Dolgov and Alexei Yu. Smirnov},
  journal={Physics Letters B},
  year={2005},
  volume={621},
  pages={1-10}
}

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References

SHOWING 1-10 OF 91 REFERENCES

Neutrino statistics and big bang nucleosynthesis

Neutrinos may possibly violate the spin-statistics theorem, and hence obey Bose statistics or mixed statistics despite having spin half. We find the generalized equilibrium distribution function of

Stringent constraints on cosmological neutrino-antineutrino asymmetries from synchronized flavor transformation

We assess a mechanism which can transform neutrino-antineutrino asymmetries between flavors in the early universe, and confirm that such transformation is unavoidable in the near bi-maximal framework

Lorentz and CPT violation in neutrinos

A general formalism is presented for violations of Lorentz and CPT symmetry in the neutrino sector. The effective Hamiltonian for neutrino propagation in the presence of Lorentz and CPT violation is

Physics of Massive Neutrinos

The study of the neutrino has emerged as important in the elucidation of weak interactions, and possibly, for future theoretical descriptions of the physics of elementary particles. The authors aim

Bose condensates, big bang nucleosynthesis, and cosmological decay of a 17 keV neutrino.

  • Madsen
  • Physics
    Physical review letters
  • 1992
The erects are generic to early-Universe decay of fermions, not just of relevance for 17 keV neutrinos, and can form a Bose condensate, with interesting consequences for galaxy formation and the dark-matter problem.

Resonant absorption of cosmic-ray neutrinos by the relic-neutrino background

Within the framework of standard big-bang cosmology and the standard electroweak model, it is shown that ..nu..nu-bar annihilation on the Z resonance is the only cosmic-ray process sensitive to relic

Analytical treatment of neutrino asymmetry equilibration from flavor oscillations in the early universe

A recent numerical study by A. D. Dolgov, S. H. Hansen, S. Pastor, S. T. Petcov, G. G. Raffelt, and D. V. Semikoz (DHPPRS) [Nucl. Phys. B632, 363 (2002)] found that complete or partial equilibrium

Dynamical Role of Light Neutral Leptons in Cosmology

Using the Vlasov equation, we show that massive galactic halos cannot be composed of stable neutral leptons of mass \ensuremath{\lesssim} 1 MeV. Since most of the mass in clusters of galaxies
...