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arXiv · 2305.05903

Neutrino oscillations induced by chiral torsion

Riya Barick·Indrajit Ghose·Amitabha Lahiri
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Abstract

Neutrino mixing is caused by the fact that neutrino flavors are not eigenstates of the free Hamiltonian. This causes oscillations among different neutrino flavors. When neutrinos pass through a medium, weak interactions produce different effective masses for neutrinos of different flavors, leading to a modification of the mixing parameters. In curved spacetime there is an additional contribution to neutrino Hamiltonian from a torsion-induced four-fermion interaction, which also causes neutrino mixing while propagating through fermionic matter. We provide an outline of the calculation of this effect on neutrino oscillation.

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Riya Barick, Indrajit Ghose, Amitabha Lahiri. 2023-05-10. Neutrino oscillations induced by chiral torsion. https://doi.org/10.31526/lhep.2023.362

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