# Response of the QED(2) Vacuum to a Quench: Long-term Oscillations of the Electric Field and the Pair Creation Rate

## TL;DR

This paper investigates the long-term behavior of the electric field and pair creation rate in QED(2) after a sudden quench, revealing sustained oscillations due to backreaction effects.

## Contribution

It provides a numerical analysis of the fully backreacted dynamics in QED(2), demonstrating persistent oscillations in electric field and pair production after a quench.

## Key findings

- Self-sustaining oscillations of electric field and pair number observed
- Oscillation characteristics depend on coupling strength
- Depletion of the external field occurs during the evolution

## Abstract

We consider -- within QED(2) -- the backreaction to the Schwinger pair creation in a time dependent, spatially homogeneous electric field. Our focus is the depletion of the external field as a quench and the subsequent long-term evolution of the resulting electric field. Our numerical solutions of the self consistent, fully backreacted dynamical equations exhibit a self-sustaining oscillation of both the electric field and the pair number depending on the coupling strength.