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Electron-positron pair production in dynamically assisted two-color electric fields is investigated for various polarizations. Momentum spectrum and number density of the created pairs are examined carefully, in particular, the effects of…

Quantum Physics · Physics 2019-06-10 Obulkasim Olugh , Zi-Liang Li , Bai-Song Xie

Electron-positron pair production in strong electric fields, i.e., the Sauter-Schwinger effect, is studied using the real-time Dirac-Heisenberg-Wigner formalism. Hereby, the electric field is modeled to be a homogeneous, single-pulse field…

High Energy Physics - Phenomenology · Physics 2019-05-07 Obulkasim Olugh , Zi-Liang Li , Bai-Song Xie , Reinhard Alkofer

Effect of spatially oscillating fields on the electron-positron pair production is studied numerically and analytically when the work done by the electric field over its spatial extent is smaller than twice the electron mass. Under large…

High Energy Physics - Phenomenology · Physics 2023-05-11 Orkash Amat , Li-Na Hu , Mamat Ali Bake , Melike Mohamedsedik , B. S. Xie

The momentum signatures in nonperturbative multiphoton pair production for general elliptic polarization electric fields are investigated by employing the real-time Dirac-Heisenberg-Wigner formalism. For a linearly polarized electric field…

Quantum Physics · Physics 2015-08-17 Z. L. Li , D. Lu , B. S. Xie , B. F. Shen , L. B. Fu , J. Liu

The mass shift effects in multiphoton pair production of a nonperturbative nature for arbitrary polarized electric fields are investigated numerically by employing the real-time Dirac-Heisenberg-Wigner formalism, and theoretically by…

High Energy Physics - Phenomenology · Physics 2014-10-24 Z. L. Li , D. Lu , B. F. Shen , L. B. Fu , J. Liu , B. S. Xie

By using Dirac-Heisenberg-Wigner formalism we study electron-positron pair production for linear, elliptic, nearly circular and circular polarizations of electric fields with symmetrical frequency chirp, and we obtain Momentum spectra and…

High Energy Physics - Phenomenology · Physics 2021-08-11 Kun Wang , Xuehua Hu , Sayipjamal Dulat , B. S. Xie

We investigate the effects of the asymmetric pulse shapes on electron-positron pair production in three distinct fields: chirp-free, small frequency chirp, and large frequency chirp fields via the real-time Dirac-Heisenberg-Wigner…

High Energy Physics - Phenomenology · Physics 2024-01-31 Neng-Zhi Chen , Orkash Amat , Li-Na Hu , Hong-Hao Fan , Bai-Song Xie

The Dirac-Heisenberg-Wigner formalism is employed to investigate electron-positron pair production in cylindrically symmetric but otherwise spatially inhomogeneous, oscillating electric fields. The oscillation frequencies are hereby tuned…

High Energy Physics - Phenomenology · Physics 2018-03-07 Christian Kohlfürst , Reinhard Alkofer

Using the Dirac-Heisenberg-Wigner (DHW) formalism, e?ects of asymmetric pulse shape on the generation of electron-positron pairs in three typical polarized fields, i.e., the linear, middle elliptical and circular ones, are investigated. Two…

Atomic Physics · Physics 2020-07-08 Obulkasim Olugh , Zi-Liang Li , Bai-Song Xie

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…

High Energy Physics - Phenomenology · Physics 2019-07-17 Mamutjan Ababekri , Bai-Song Xie , Jun Zhang

The process of electron-positron pair production is investigated within the phase-space Wigner formalism. The similarities between atomic ionization and pair production for homogeneous, but time-dependent linearly polarized electric fields…

High Energy Physics - Phenomenology · Physics 2015-12-21 Christian Kohlfürst

Dirac-Heisenberg-Wigner formalism is used to study chirp effects on the vacuum pair creation under inhomogeneous electric fields. For rapidly oscillating electric fields, the particle momentum spectrum is sensitive to both of the spatial…

Quantum Physics · Physics 2020-10-07 Mamutjan Ababekri , Sayipjamal Dulat , B. S. Xie , Jun Zhang

We study electron-positron pair production within two counter-propagating, circularly polarized electromagnetic fields through the Wigner formalism. We numerically generate high-resolution momentum maps to perform a detailed spectroscopic…

High Energy Physics - Phenomenology · Physics 2025-02-05 Christian Kohlfürst

Electron-positron pair production in spatially and temporally inhomogeneous electric and magnetic fields is studied within the Dirac-Heisenberg-Wigner formalism (quantum kinetic theory) through computing the corresponding Wigner functions.…

High Energy Physics - Phenomenology · Physics 2020-05-13 Christian Kohlfürst

The production of electron-positron pairs from vacuum by counterpropagating laser beams of linear polarization is calculated. In contrast to the usual approximate approach, the spatial dependence and magnetic component of the laser field…

Electron-positron pair production from vacuum in a strong electric field oscillating in time is studied. The field is assumed to consist of two consecutive pulses, with variable time delay in between. Pair production probabilities are…

Plasma Physics · Physics 2019-05-22 L. F. Granz , O. Mathiak , S. Villalba-Chávez , C. Müller

We investigated the spin effect on the vacuum pair production by Dirac-Heisenberg-Wigner (DHW) formalism under two-color counter-rotating electric fields. We primarily studied the combined effects of the field asymmetry, time delay, and…

High Energy Physics - Phenomenology · Physics 2025-05-19 Zhao-Yuan Chen , Orkash Amat , Jin-hui Bai , Mamat Ali Bake

We investigate the enhanced dynamically assisted electron-positron pair production in differently polarized electric fields with frequency chirps within the real-time Dirac-Heisenberg-Wigner formalism. The combined influence of the chirp…

High Energy Physics - Phenomenology · Physics 2026-05-13 Abhinav Jangir , Anees Ahmed

The momentum spectrum and number density of created bosons for two types of arbitrarily polarized electric fields are calculated and compared with those of created fermions, employing the equal-time Feshbach-Villars-Heisenberg-Wigner…

Quantum Physics · Physics 2019-10-30 Z. L. Li , B. S. Xie , Y. J. Li

Electron-positron pair production from vacuum in spatially inhomogeneous electric fields with quadratically symmetric chirp is studied within the real-time Dirac-Heisenberg-Wigner formalism. The reduced momentum spectrum and the reduced…

High Energy Physics - Phenomenology · Physics 2026-03-17 Le Le Chen , Xiao-Ting Xu , Rong-An-Tang , Xue-Ren Hong , Lie-Juan Li , Bai-Song Xie
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