Creation of neutral fermions with anomalous magnetic moment from vacuum by inhomogeneous magnetic field

TL;DR

This paper develops a quantum field theory framework to describe the creation of neutral fermions with anomalous magnetic moments from vacuum in inhomogeneous magnetic fields, providing new insights into particle creation mechanisms.

Contribution

It introduces a consistent QFT-based approach to neutral particle creation in magnetic fields and reduces the problem to charge particle creation in a scalar potential.

Findings

Derived a method to calculate neutral fermion creation from vacuum.

Solved the problem of neutral particle creation in a linearly growing magnetic field.

Connected neutral particle creation to charge particle creation in scalar potentials.

Abstract

Until now a consistent description (based on QFT) of neutral particle creation (due to their magnetic moments) in strong inhomogeneous magnetic fields was unknown. To provide such a description is a part of the present article. In the framework of the developed approach, we demonstrate that in a specific cases, the problem can be technically reduced to the problem of charge particle creation by an electric field given by a nonlinear scalar potential. We analyze once again the latter problem, taking into account existing approaches and formulating for the first time its solution from the view point of QFT. As a final result, we calculate neutral particle creation form the vacuum by a linearly growing magnetic field.