Residual currents generated from vacuum by an electric field pulse in 2+1 dimensional QED models

S.A Smolyansky,V.V Dmitriev,A.D Panferov,D.V Churochkin,B Kämpfer,S Bondarenko,V Burov,A Malakhov

doi:10.1051/epjconf/201713806004

S.A Smolyansky, V.V Dmitriev + Show 6 more

Open Access

https://doi.org/10.1051/epjconf/201713806004

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Abstract

In the framework of strong field QED, the generation of a residual alternating polarization current is demonstrated, which remains after switching off an external field pulse. This effect is stipulated by inertial properties of the physical vacuum. In the standard vacuum D = 2+1 QED, this current is rapidly damped fast but can be available, apparently, for observation in the graphene, where the Fermi velocity vF ≪ c plays an analogous role as the light velocity.

Highlights

IntroductionThe residual polarization current turns out to be fast oscillating and damped
We address the question whether there are residual electric currents which remain after the strong electromagnetic impulse passage
The total current is composed of the conductivity and polarization currents, and the residual conductivity current is constant

Summary

Introduction

The residual polarization current turns out to be fast oscillating and damped This is a peculiar inertial effect of the vacuum oscillations excited by an external field. According to this prediction, some alternate component will appear in the total residual current We will consider this effect in a rather general case for different variants of spinor QED models in the external spatially-homogeneous, time-dependent electric field where the spin effects can be separated from the basic effect of vacuum creation of the electron-positron plasma (EPP). We consider two such systems: D = 2 + 1 massless QED and graphene.

Kinetic theory

Residual currents

Conclusion