# Electromagnetic properties of neutrinos: three new phenomena in neutrino spin oscillations

## TL;DR

This paper explores three novel phenomena related to neutrino spin oscillations, including effects of magnetic fields, matter currents, and a new approach using exact stationary states, advancing understanding of neutrino electromagnetic behavior.

## Contribution

It introduces a new framework for describing neutrino spin and spin-flavour oscillations using exact stationary states in magnetic fields, and analyzes effects of matter currents and polarization.

## Key findings

- Neutrino mixing and oscillations are affected by magnetic field components.
- Neutrino spin oscillations can be induced by electroweak interactions with moving matter.
- A new approach using exact stationary states provides a comprehensive description of neutrino spin phenomena.

## Abstract

In studies of neutrino electromagnetic properties we discuss three very interesting aspects related to neutrino spin oscillations. First we consider neutrino mixing and oscillations in the mass and flavour bases under the influence of a constant magnetic field with nonzero transversal and longitudinal components. Then we discuss the effect of neutrino spin oscillations induced by electroweak interactions of neutrino with moving matter in case there is matter transversal current or polarization. In the final part of the paper we discuss recently developed approach to description of neutrino spin and spin-flavour oscillations in a constant magnetic field that is based on the use of the exact neutrino stationary states in the magnetic field.