Relic neutrino asymmetry generation from ${\nu }_{\alpha }-{\nu }_s$ oscillations

Abstract

Active--sterile neutrino oscillations provide a mechanism by which large differences in the neutrino and antineutrino number densities can be created in the early universe. The quantum kinetic equations are employed in the study of these asymmetries, which, when solved analytically in the adiabatic limit, generate physically transparent evolution equations that are very useful for the understanding of the nature of the asymmetry growth.

3 pages, no figures, uses espcrc2.sty; Talk given at the Europhysics Neutrino Oscillation Workshop, Otranto, Italy, September 9-16, 2000, to appear in the Proceedings

References in corpus (2)

• Further studies on relic neutrino asymmetry generation I: the adiabatic Boltzmann limit, non-adiabatic evolution, and the classical harmonic oscillator analogue of the quantum kinetic equations
• Further studies on relic neutrino asymmetry generation II: a rigorous treatment of repopulation in the adiabatic limit