neutrino asymmetry generation from ν α ↔ ν s oscillations
نویسنده
چکیده
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 neutrino 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.
منابع مشابه
NEUTRINO ASYMMETRY GENERATION IN THE EARLY UNIVERSE (FROM να ↔ νs OSCILLATIONS)
Neutrino asymmetry generation from active-sterile neutrino oscillations in the early Universe has different important cosmological effects. We discuss its basic features and present recent results on the borders of the generation for mixing angles sin 2 2θ0 ≤ 10 −7. 1 General conditions for neutrino asymmetry generation Let us consider, from a statistical point of view, a two neutrino mixing ν ...
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