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Neutrino Oscillations in Noisy Media

F. N. Loreti·A. B. Balantekin
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Abstract

We develop the Redfield equation for delta-correlated gaussian noise and apply it to the case of two neutrino flavor or spin precession in the presence of a noisy matter density or magnetic field, respectively. The criteria under which physical fluctuations can be well approximated by the delta-correlated gaussian noise for the above cases are examined. Current limits on the possible neutrino magnetic moment and solar magnetic field suggest that a reasonably noisy solar magnetic field would not appreciably affect the solar electron neutrino flux. However, if the solar electron density has fluctuations of a few percent of the local density and a small enough correlation length, the MSW effect is suppressed for a range of parameters.

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F. N. Loreti, A. B. Balantekin. 1994-06-02. Neutrino Oscillations in Noisy Media. https://doi.org/10.1103/physrevd.50.4762

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