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Study of pair production in inhomogeneous two-color electric fields using the computational quantum field theory
Physical Review D ( IF 5 ) Pub Date : 2021-06-22 , DOI: 10.1103/physrevd.103.116018
Z. L. Li , C. Gong , Y. J. Li

We first demonstrate theoretically that the computational quantum field theory is equivalent to the quantum kinetic theory for pair creation in a spatially homogeneous and time-dependent electric field, then verify numerically their equivalence for pair creation in one-dimensional time-dependent electric fields, and finally investigate detailedly the effects of the field frequency, spatial width, pulse duration, and relative phase on dynamically assisted Schwinger pair production in an inhomogeneous two-color electric field. It is found that the enhancement effect of pair creation is very sensitive to the field frequency and generally very obvious for a shorter field width, a longer pulse duration, and a relative phase of maximizing the field strength. These results can provide a significant reference for the optimal control theory of pair creation which aims to maximize the created pair yield within a given scope of field parameters.

中文翻译:

使用计算量子场论研究非均匀双色电场中的对产生

我们首先在理论上证明了计算量子场论等价于空间均匀和时间相关电场中对创建的量子动力学理论,然后从数值上验证它们在一维时间依赖电场中创建对的等价性,并且最后详细研究场频、空间宽度、脉冲持续时间和相对相位对非均匀双色电场中动态辅助施温格对产生的影响。发现对产生的增强效应对场频非常敏感,一般对于较短的场宽、较长的脉冲持续时间和使场强最大化的相对相位非常明显。
更新日期:2021-06-22
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