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Effects of finite spatial extent on Schwinger pair production

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arxiv 1905.01629 v2 pith:KMPOLCCY submitted 2019-05-05 hep-ph quant-ph

Mamutjan Ababekri , Bai-Song Xie , Jun Zhang This is my paper · ORCID
classification hep-phquant-ph
keywords spatialfieldelectricextentproductiontemporaleffectsexternal
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Electron-positron pair production from vacuum in external electric fields with space and time dependencies is studied numerically using real time Dirac-Heisenberg-Wigner formalism. The influence of spatial focusing scale of the electric field on momentum distribution and the total yield of the particles is examined by considering standing wave mode of the electric field with different temporal configurations. With the decrease of spatial extent of the external field, signatures of the temporal field are weaken in the momentum spectrum. Moreover, in the extremely small spatial extent, novel features emerge due to the combined effects of both temporal and spatial variations. We also find that for dynamically assisted particle production, while the total particle yield drops significantly in small spatial extents, the assistance mechanism tends to increase in these highly inhomogeneous regimes, where the slow and fast pulses are affected differently by the overall spatial inhomogeneity.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Schwinger pair production in spacetime fields: Moir\'e patterns, Aharonov-Bohm phases and Sturm-Liouville eigenvalues

    hep-ph 2024-12 conditional novelty 7.0 of 10

    Two spacetime-separated electric pulses generically produce interference in the pair-production momentum spectrum when they are parallel, unlike time-dependent pulses, and can create 2D moiré patterns in the electron-...

  2. Scattered wave functions and worldline instantons for particle production in curved spacetime

    gr-qc 2026-06 unverdicted novelty 6.0 of 10

    Extends scattered-wave-function and open-worldline-instanton methods to multidimensional curved spacetimes and demonstrates agreement on 2D metric examples.

  3. Study on axial fields in the dynamically assisted Schwinger effect

    hep-ph 2025-01 conditional novelty 6.0 of 10

    A circularly polarized high-frequency wave creates an effective axial field that significantly boosts fermion pair production in the dynamically assisted Schwinger effect.

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