2003/01/01 by Efrain J. Ferrer, Vivian de la Incera · 1 citation
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ph
paper · pdf · doi:10.1063/1.1627728
Talk given at the Fourth Tropical Workshop on Particle Physics and Cosmology, Cairns, Australia, June 9-13, 2003
openalex publication_date 2003/01/01 · arxiv created 2003/08/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
In this talk we review the results on neutrino propagation under external magnetic fields. We concentrate on the effects of strong magnetic fields MW2 ≫ B ≫ me2 in neutral media. It is shown that the neutrino energy density get a magnetic contribution in the strong‐field, one‐loop approximation, which is linear in the Fermi coupling constant as in the charged medium. It is analyzed how this correction produces a significant oscillation resonance between electron‐neutrinos and the other two active flavors, as well as with sterile neutrinos. The found resonant level‐crossing condition is highly anisotropic. Possible cosmological applications are discussed. Effects due to primordial hypermagnetic fields on neutrinos propagating in the symmetric phase of the electroweak model are also presented. At sufficiently strong hypermagnetic fields, B ⩾ T2, the neutrino energy is found to be similar to that of a massless charged particle with one‐degree of freedom.