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arXiv 1409.1806hep-phhep-th
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双频振荡电场中正负电子对的产生

Electron-positron pair production in a bifrequent oscillating electric field

Ibrahim Akal, Selym Villalba-Chávez, Carsten Müller

摘要:

研究了由强振荡电场模和微扰振荡电场模叠加极化的量子真空中正负电子对的产生。我们的结果依赖于一个非平衡量子场论的方法,描述了量子动力学玻尔兹曼-弗拉索夫方程。通过叠加的微扰模式,在单粒子分布函数的特征共振效应和拉比样频率进行修改,相比,从一个强的振荡场模式驱动的情况下产生的预测。这在所产生的对的动量谱中得到了证明。此外,对每个模式的强度参数上的总数的依赖关系进行了讨论,并发现一个强大的增强相对Keldysh参数的大值。

英文摘要:

Production of electron-positron pairs from the quantum vacuum polarized by the superposition of a strong and a perturbative oscillating electric-field mode is studied. Our outcomes rely on a nonequilibrium quantum field theoretical approach, described by the quantum kinetic Boltzmann-Vlasov equation. By superimposing the perturbative mode, the characteristic resonant effects and Rabi-like frequencies in the single-particle distribution function are modified, as compared to the predictions resulting from the case driven by a strong oscillating field mode only. This is demonstrated in the momentum spectra of the produced pairs. Moreover, the dependence of the total number of pairs on the intensity parameter of each mode is discussed and a strong enhancement found for large values of the relative Keldysh parameter.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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