Neutrino-Lasing in The Early Universe
arXiv:hep-ph/9302261 · doi:10.1103/PhysRevLett.71.1128
Abstract
Recently, Madsen has argued that relativistic decays of massive neutrinos into lighter fermions and bosons may lead, via thermalization, to the formation of a Bose condensate. If correct, this could generate mixed hot and cold dark matter, with important consequences for structure formation. From a detailed study of such decays, we arrive at substantially different conclusions; for a wide range of masses and decay times, we find that stimulated emission of bosons dominates the decay. This phenomenon can best be described as a neutrino laser, pumped by the QCD phase transition. We discuss the implications for structure formation and the dark-matter problem.
7 pages, 3 figures included as uuencoded file, CITA/93/7
Cited by in corpus (10)
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- Dark Matter and Structure Formation with Late Decaying Particles
- Decay-Produced Neutrino Hot Dark Matter
- Cold and Hot Dark Matter from a Single Nonthermal Relic
- Classical Nambu-Goldstone fields
- A Cosmological Three Level Neutrino Laser
- Mixed dark matter with low-mass bosons
- Neutrino Lasing in the Sun