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arXiv · 1406.5558

A New Spin on Neutrino Quantum Kinetics

Vincenzo Cirigliano·George M. Fuller·Alexey Vlasenko
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Abstract

Recent studies have demonstrated that in anisotropic environments a coherent spin-flip term arises in the Quantum Kinetic Equations (QKEs) which govern the evolution of neutrino flavor and spin in hot and dense media. This term can mediate neutrino-antineutrino transformation for Majorana neutrinos and active-sterile transformation for Dirac neutrinos. We discuss the physical origin of the coherent spin-flip term and provide explicit expressions for the QKEs in a two-flavor model with spherical geometry. In this context, we demonstrate that coherent neutrino spin transformation depends on the absolute neutrino mass and Majorana phases.

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Vincenzo Cirigliano, George M. Fuller, Alexey Vlasenko. 2014-06-20. A New Spin on Neutrino Quantum Kinetics. https://arxiv.org/abs/1406.5558

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