Effect of electromagnetic fields on the creation of scalar particles in a flat Robertson-Walker space-time

TL;DR

This paper investigates how electromagnetic fields affect scalar particle creation in a flat Robertson-Walker space-time, showing electric fields enhance creation while magnetic fields suppress it, using the Klein-Gordon equation and Bogoliubov transformations.

Contribution

It provides a detailed analysis of electromagnetic influence on scalar particle creation in cosmological models, highlighting the contrasting effects of electric and magnetic fields.

Findings

Electric fields increase scalar particle creation.

Magnetic fields decrease scalar particle creation.

Quantitative pair creation probabilities are calculated.

Abstract

The influence of electromagnetic fields on the creation of scalar particles from vacuum in a flat Robertson-Walker space-time is studied. The Klein Gordon equation with varying electric field and constant magnetic one is solved. The Bogoliubov transformation method is applied to calculate the pair creation probability and the number density of created particles. It is shown that the electric field amplifies the creation of scalar particles while the magnetic field minimizes it.