  Superfluid condensation of neutrinos of cosmological origin at a low enough
temperature can provide simple and elegant solution to the problems of neutrino
oscillations and the accelerated expansion of the universe. It would give rise
to a late time cosmological constant of small magnitude and also generate tiny
Majorana masses for the neutrinos as observed from their flavor oscillations.
We show that carefully prepared beta decay experiments in the laboratory would
carry signatures of such a condensation, and thus, it would be possible to
either establish or rule out neutrino condensation of cosmological scale in
laboratory experiments.
