How degenerate can cosmological neutrinos be?

Abstract

There are well-known bounds on light neutrino masses from cosmological energy density arguments. These arguments assume the neutrinos to be non-degenerate. We show how these bounds are affected if the neutrinos are degenerate. In this case, we obtain correlated bounds between neutrino mass and degeneracy.

5 pages, Latex, uses epsf.sty. (Some details added at the referee's request. One reference added.)

References in corpus (2)

• Measurement of a small atmospheric ${\nu }_{\mu }/{\nu }_e$ ratio
• Where do we stand with solar neutrino oscillations?

Cited by in corpus (9)

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• Cosmological implications of a Relic Neutrino Asymmetry
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• Measuring the cosmological lepton asymmetry through the CMB anisotropy
• Cosmological measurement of neutrino mass in the presence of leptonic asymmetry
• Experimental signatures of cosmological neutrino condensation
• Relic neutrino asymmetry, CMB and large-scale structure