Neutrino in magnetic fields: from the first studies to the new effects in neutrino oscillations

TL;DR

This paper reviews the history and recent discoveries of four new effects in neutrino oscillations influenced by magnetic fields, highlighting novel electromagnetic properties and oscillation behaviors of massive neutrinos.

Contribution

The paper introduces four newly identified effects in neutrino oscillations caused by magnetic fields, expanding understanding of neutrino electromagnetic interactions and oscillation dynamics.

Findings

Identification of four new effects in neutrino oscillations

Analysis of neutrino magnetic moments for various masses

Discussion of neutrino spin and flavor oscillations in different environments

Abstract

In this paper I should like to present {\bf {{the four new effects}}} in neutrino oscillations that have been recently investigated in my research group at the Department of Theoretical Physics of the Moscow State University. Due to the fact that these studies were stimulated by our previous research of neutrino interactions in the presence of magnetic fields, and also because the year 2004 commemorates the 40th years jubilee since the the first paper on the neutrino interaction in a magnetic field was published, a short review on the first papers dedicated to the problem of neutrinos in magnetic fields, and also on the recent results in this field, prefaces (Section 1) the discussion on {\bf the new effects} in neutrino oscillations. Section 2 is devoted to our recent studies of the electromagnetic properties of a {\it massive} neutrino, including the neutrino magnetic moment for different values of neutrino mass. In Section 3 we discuss {\it \bf the four new effects} in neutrino spin and flavour oscillations in different background environments.