Momentum spectrum of Schwinger pair production in four-dimensional e-dipole fields
Gianluca Degli Esposti, Greger Torgrimsson
Abstract
We calculate the momentum spectrum of electron-positron pairs created via the Schwinger mechanism by a class of four-dimensional electromagnetic fields called e-dipole fields. To the best of our knowledge, this is the first time the momentum spectrum has been calculated for 4D, exact solutions to Maxwell’s equations. Moreover, these solutions give fields that are optimally focused, and are hence particularly relevant for future experiments. To achieve this we have developed a worldline instanton formalism where we separate the process into a formation and an acceleration region. Published by the American Physical Society 2024
Topics & Concepts
PhysicsInstantonMomentum (technical analysis)Quantum electrodynamicsPair productionDipoleElectromagnetic fieldFormalism (music)ElectronSpectrum (functional analysis)Classical mechanicsMathematical physicsQuantum mechanicsEconomicsArtVisual artsFinanceMusicalLaser-Plasma Interactions and DiagnosticsParticle Accelerators and Free-Electron LasersParticle accelerators and beam dynamics