New Results in the Physics of Neutrino Oscillations

Details New Results in the Physics of Neutrino Oscillations New Results in the Physics of Neutrino Oscillations

1998-10-12

arxiv.org/abs/hep-ph/9810329v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 1 figure. Talk given at the 36th International School of Subnuclear Physics, Erice, 29 Aug - 7 Sep 1998. To appear i

Scientific paper

I report on recent theoretical results about neutrino mixing and oscillations. I show that in Quantum Field Theory, mixing transformations are not trivial and the vacuum for the mixed fields has a condensate structure. This fact has phenomenological consequences on neutrino oscillations: the oscillation formula turns out to have an additional oscillating piece and energy dependent amplitudes. The usual Pontecorvo formula is recovered in the relativistic limit. I report also about preliminary results on the presence of a topological (Berry) phase for oscillating neutrinos.

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