Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2004-08-08
Int.J.Mod.Phys. A19 (2004) 5385-5394
Physics
High Energy Physics
High Energy Physics - Phenomenology
Talk given at the Conference: MRST-2004: "From Quaks to Cosmology," Montreal, Canada, May 12-14, 2004
Scientific paper
10.1142/S0217751X04022621
We review the results on neutrino propagation in neutral and charged media under strong magnetic fields $M_{W}^{2}\gg B\gg m_{e}^{2}$. It is shown that the neutrino energy density gets a magnetic contribution in both charged and neutral media, which is linear in the magnetic field, of first order in $G_{F}$, and independent of the charge density. This new term enters as a correction to the neutrino kinetic energy and produces an anisotropic contribution to the neutrino index of refraction. As a consequence, in a neutral medium a highly anisotropic resonant level-crossing condition takes place for the oscillation between electron-neutrinos and the other neutrino species. Possible cosmological applications are presented.
Ferrer Efrain J.
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