Precession of a particle with anomalous magnetic moment in electromagnetic and gravitational pp-wave fields

TL;DR

This paper provides an exact solution to the BMT equations describing a spin particle's behavior in combined electromagnetic and gravitational pp-wave fields, revealing how an anomalous magnetic moment influences spin dynamics.

Contribution

It introduces a novel exact solution for spin particle dynamics in combined electromagnetic and gravitational wave backgrounds, highlighting the role of the anomalous magnetic moment.

Findings

Anomalous magnetic moment causes additional spin rotation.

Spin rotation is modulated by electromagnetic and gravitational wave periodicities.

Exact solutions enhance understanding of particle behavior in complex fields.

Abstract

We present an exact solution of the Bargmann-Michel-Telegdi (BMT) equations for the dynamics of a spin particle in external electromagnetic and gravitational pp-wave fields. We demonstrate that an anomalous magnetic moment gives rise to an additional spin rotation which is modulated both by the electromagnetic and by the gravitational wave periodicities.