Sokolov--Ternov effect in rotating systems

TL;DR

This paper investigates how electromagnetic radiation and polarization of fermions are affected by rotation and magnetic fields, revealing that rotation significantly influences fermion polarization and induces a magnetic moment in quark-gluon plasma.

Contribution

It provides a detailed analysis of the Sokolov--Ternov effect in rotating systems, highlighting the impact of rotation on fermion polarization and magnetic properties.

Findings

Rotation alters the degree of fermion polarization.

Rotating quark-gluon plasma develops a finite magnetic moment.

Photon radiation depends on fermion polarization and angular velocity.

Abstract

We study electromagnetic radiation by electrically charged fermions embedded in a rotating medium in an external magnetic field. We compute the dependence of the radiation intensity on the angular velocity $\Omega$ of the rotating medium for fermion polarizations along and opposite the magnetic field direction in intense subcritical fields. The polarization dependence of the photon radiation results in the Sokolov--Ternov effect -- the radiative polarization of fermions. We study the dependence of the degree of polarziation on $\Omega$. We found that rotation significantly changes the degree of polarization. We show that the rotating quark-gluon plasma acquires a finite magnetic moment that exhibits complex dependence on $\Omega$.