Strong fields and neutral particle magnetic moment dynamics

TL;DR

This paper introduces a covariant classical model for magnetic moment dynamics, analyzing neutral particles like neutrinos and neutrons in strong electromagnetic fields, with implications for experimental tests of neutrino properties.

Contribution

It presents a new covariant classical framework for magnetic moment dynamics and explores its implications for neutral particles in intense electromagnetic fields.

Findings

Ultra-relativistic neutrinos can reach critical accelerations in laser fields.

Neutrino radiation could distinguish Majorana from Dirac neutrinos.

The model addresses discrepancies in relativistic quantum mechanics and QED.

Abstract

Interaction of magnetic moment of point particles with external electromagnetic fields experiences unresolved theoretical and experimental discrepancies. In this work we point out several issues within the relativistic quantum mechanics and the QED and we describe effects related to a new covariant classical model of magnetic moment dynamics. Using this framework we explore the invariant acceleration experienced by neutral particles coupled to an external plane wave field through the magnetic moment: we study the case of ultra relativistic Dirac neutrinos with magnetic moment in the range of $10^{-11}$ to $10^{-20}$ $\mu_\mathrm{B}$; and we address the case of slowly moving neutrons. We explore how critical accelerations for neutrinos can be experimentally achieved in laser-pulse interactions. The radiation of accelerated neutrinos can serve as an important test distinguishing between Majorana and Dirac nature of neutrinos.