2018/05/19 by I. A. Aleksandrov, G. Plunien, В. М. Шабаев +1 · 49 citations
Engineering · Mathematics · Physics and Astronomy · #Atomic and Molecular Physics #Computational physics #Dipole #Discrete dipole approximation #Electric field #Electron #Field (mathematics) #Laser-Plasma Interactions and Diagnostics #Mathematics #Momentum (technical analysis) #Pair production #Particle Accelerators and Free-Electron Lasers #Physics #Quantum electrodynamics #Quantum mechanics #Yield (engineering) #hep-ph
paper · pdf · doi:10.1103/physrevd.97.116001
published in Physical review. D/Physical review. D. 97(11) (American Physical Society) · 22 pages, 11 figures, 3 tables
arxiv created 2018/05/19 · openalex publication_date 2018/06/05 · arxiv updated 2018/06/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We investigate the phenomenon of electron-positron pair production from vacuum in the presence of a strong electric field superimposed by a weak but fast varying pulse which substantially increases the total particle yield. We employ a nonperturbative numerical technique and perform the calculations beyond the spatially-uniform-field approximation, i.e., dipole approximation, taking into account the coordinate dependence of the fast component. The analysis of the main characteristics of the pair-production process (momentum spectra of particles and total amount of pairs) reveals a number of important features which are absent within the previously used approximation. In particular, the structure of the momentum distribution is modified both qualitatively and quantitatively, and the total number of pairs created as well as the enhancement factor due to dynamical assistance become significantly smaller.