Schwinger Pair Production in Superposed Electric-Field Pulses with Distinct Spatial Widths
Abstract
Electron--positron pair production in spatially and temporally inhomogeneous electric fields is investigated in 1+1 dimensions within the Dirac--Heisenberg--Wigner (DHW) formalism. We consider a composite field formed by two Gaussian pulses with independently adjustable spatial widths, λ1 and λ2, extending commonly used combined-pulse configurations in which the constituent pulses share the same spatial envelope. Both temporally overlapping and temporally separated configurations are analyzed. For overlapping pulses, decreasing λ2 at fixed λ1 enlarges the weak-field region and enhances the low-momentum part of the particle spectrum. Oscillatory temporal profiles further increase the particle yield while reducing the net momentum transferred to the particles. For temporally separated pulses, the spatial width of the delayed pulse determines the extent to which it accelerates particles created by the earlier pulse. A narrow delayed pulse affects only a limited fraction of these particles, whereas a broader pulse substantially reshapes the final momentum distribution. These results identify the spatial-width disparity between the constituent pulses as an additional control parameter for Schwinger pair production in multicomponent electric fields.
Related
- Effects of quadratic frequency chirping and carrier-envelope phase on Schwinger pair production in polarized electric fields
- Electric Flux as a Criterion for String Breaking and Schwinger Pair Production
- Helicity signatures in Schwinger pair production under rotating electric fields
- Digital Quantum Simulation of Nonequilibrium Dynamics in the Schwinger Model under a Strong External Electric Field
- Bosonization for the Schwinger effect at small fermion mass: analytic formula for the 1+1D current in an arbitrary time-dependent, inhomogeneous electric field
BibTeX
@misc{abdukerim2026schwinger,
title = {{Schwinger Pair Production in Superposed Electric-Field Pulses with Distinct Spatial Widths}},
author = {Abduweli Abdukerim},
howpublished = {arXiv},
year = {2026},
month = nov,
doi = {10.48550/arxiv.2611.02899},
eprint = {2611.02899},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2611.02899},
}
RIS
TY - UNPB
TI - Schwinger Pair Production in Superposed Electric-Field Pulses with Distinct Spatial Widths
AU - Abduweli Abdukerim
PY - 2026
DA - 2026/11/02
PB - arXiv
DO - 10.48550/arxiv.2611.02899
UR - https://arxiv.org/abs/2611.02899
AB - Electron--positron pair production in spatially and temporally inhomogeneous electric fields is investigated in 1+1 dimensions within the Dirac--Heisenberg--Wigner (DHW) formalism. We consider a composite field formed by two Gaussian pulses with independently adjustable spatial widths, λ_1 and λ_2, extending commonly used combined-pulse configurations in which the constituent pulses share the same spatial envelope. Both temporally overlapping and temporally separated configurations are analyzed. For overlapping pulses, decreasing λ_2 at fixed λ_1 enlarges the weak-field region and enhances the low-momentum part of the particle spectrum. Oscillatory temporal profiles further increase the particle yield while reducing the net momentum transferred to the particles. For temporally separated pulses, the spatial width of the delayed pulse determines the extent to which it accelerates particles created by the earlier pulse. A narrow delayed pulse affects only a limited fraction of these particles, whereas a broader pulse substantially reshapes the final momentum distribution. These results identify the spatial-width disparity between the constituent pulses as an additional control parameter for Schwinger pair production in multicomponent electric fields.
ER -