Operator lifetime and the force-free electrodynamic limit of magnetised holographic plasma

TL;DR

This paper investigates the validity of force-free electrodynamics in magnetised holographic plasma by analyzing the lifetime of the electric field operator, revealing it decreases with increasing magnetic field strength.

Contribution

It introduces a holographic model to evaluate electric flux lifetime, connecting higher-form symmetries with plasma dynamics in strong magnetic fields.

Findings

Electric flux lifetime decreases as magnetic field strength increases.

Force-free electrodynamics is valid in regimes with sufficiently long electric field operator lifetime.

The model links screening effects to the global symmetry structure of plasma.

Abstract

Using the framework of higher-form global symmetries, we examine the regime of validity of force-free electrodynamics by evaluating the lifetime of the electric field operator, which is non-conserved due to screening effects. We focus on a holographic model which has the same global symmetry as that of low energy plasma and obtain the lifetime of (non-conserved) electric flux in a strong magnetic field regime. The lifetime is inversely correlated to the magnetic field strength and thus suppressed in the strong field regime.