QED Energy-Momentum Trace as a Force in Astrophysics

TL;DR

This paper investigates the quantum properties of the energy-momentum trace in QED under strong electromagnetic fields, revealing its role as a force in astrophysical contexts like interactions near magnetized stars.

Contribution

It introduces the origin of the energy-momentum trace in quantum nonlinearity and models vacuum fluctuation effects on particles near magnetized stellar objects.

Findings

Derived the quantum vacuum fluctuation-induced interaction

Linked the energy-momentum trace to a force in astrophysics

Analyzed properties of the trace in external electromagnetic fields

Abstract

We study the properties of the trace $\Tmm$ of the QED energy-momentum tensor in the presence of quasi-constant external electromagnetic fields. We exhibit the origin of $\Tmm$ in the quantum nonlinearity of the electromagnetic theory. We obtain the quantum vacuum fluctuation-induced interaction of a particle with the field of a strongly magnetized compact stellar object.