快速振荡电场下对产生过程中的反作用效应与等离子体振荡
Backreaction effect and plasma oscillation in pair production for rapidly oscillating electric fields
AI总结：
本研究通过求解量子弗拉索夫方程探究快速振荡电场下对产生的反作用效应与等离子体振荡，明确了反作用可忽略的电场范围，揭示了等离子体振荡周期的影响因素及反作用下动量谱的复杂干涉特性。
摘要：
本文通过求解量子弗拉索夫方程，研究了快速振荡电场下对产生过程中的反作用效应与等离子体振荡。与此前的认知相反，研究发现，在快速振荡的弱电场（尤其是带频率啁啾的亚临界外电场）的对产生过程中，反作用效应可以忽略。在部分情况下，产生的电子-正电子等离子体的振荡周期可通过基于朗缪尔振荡频率构建的简单公式描述，但一般情况下无法实现，因为等离子体振荡周期不仅直接取决于产生粒子的最终数密度，还与外电场参数相关。此外，研究发现考虑反作用后，动量谱呈现出复杂的干涉现象。这些结果给出了无需考虑反作用效应的外电场安全范围，深化了我们对含反作用效应的对产生过程的理解。
英文摘要：
The backreaction effect and plasma oscillation in pair production for rapidly oscillating electric fields are investigated by solving quantum Vlasov equation. Contrary to previously thought, it is found that the backreaction effect can be neglected in the pair production for a rapidly oscillating but weak electric field, particularly, for a subcritical external electric field with frequency chirp. In some cases the oscillation period of created electron-positron plasma can be described by a simple formula constructed based on the Langmiur oscillation frequency, but it is impossible in general case because the plasma oscillation period directly depend not only on the final number density of created particles, but also on the external electric field parameters. Moreover, it is found that the momentum spectrum presents complex interferences after considering the backreaction. These results give us the safety range of external electric fields for taking no account of the backreaction effect and deepen our understanding of the pair production with the backreaction effect.
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。
