Physics of Synchronized Neutrino Oscillations Caused by Self-Interactions

Details Physics of Synchronized Neutrino Oscillations Caused by Self-Interactions Physics of Synchronized Neutrino Oscillations Caused by Self-Interactions

2001-09-05

arxiv.org/abs/hep-ph/0109035v3

Phys.Rev.D65:053011,2002

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 3 figures

Scientific paper

10.1103/PhysRevD.65.053011

In the early universe or in some regions of supernovae, the neutrino refractive index is dominated by the neutrinos themselves. Several previous studies have found numerically that these self-interactions have the effect of coupling different neutrino modes in such a way as to synchronize the flavor oscillations which otherwise would depend on the energy of a given mode. We provide a simple explanation for this baffling phenomenon in analogy to a system of magnetic dipoles which are coupled by their self-interactions to form one large magnetic dipole which then precesses coherently in a weak external magnetic field. In this picture the synchronized neutrino oscillations are perfectly analogous to the weak-field Zeeman effect in atoms.

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