Spirals, vortices, and helicity entanglements in dynamical Sauter-Schwinger pair creation

Abstract

We study helicity correlations of electron-positron pairs created by a homogeneous time-dependent electric field in the Sauter-Schwinger scenario. Our analysis is based on solving the Dirac equation with the Feynman or anti-Feynman boundary conditions, which is equivalent to the scattering matrix approach widely used in high energy physics. Most importantly, both these methods allow to fully account for the helicity (or, more generally, spin) correlations of created particles. The influence of helicity correlations and the carrier-envelope phase of the electric pulse on the properties of topological structures (such as spirals and vortices) in momentum distributions of created particles is investigated. The generation of maximally entangled helicity states is discussed and the possibility of using a short electric pulse as a fast switch between them is indicated.

13 pages, 10 figures

References in corpus (12)

• The electronic properties of graphene
• Worldline Instantons II: The Fluctuation Prefactor
• Schwinger pair production in space- and time-dependent electric fields: Relating the Wigner formalism to quantum kinetic theory
• Parameter estimation with gravitational waves
• Theory of Majorana zero modes in unconventional superconductors
• Dynamical Schwinger process in a bifrequent electric field of finite duration: survey on amplification
• Momentum vortices on pairs production by two counter-rotating fields
• On the kinetic equation approach to pair production by time-dependent electric field
• Pairwise mode entanglement in Schwinger production of particle-antiparticle pairs in an electric field
• Schwinger effect of a relativistic boson entangled with a qubit
• Floquet engineering spin triplet states in unconventional magnets
• Vortex Structures and Momentum Sharing in Dynamic Sauter-Schwinger Process