论文标题
在时间依赖的电场中的非线性康普顿散射：LCFA及以后
Nonlinear Compton scattering in time-dependent electric fields: LCFA and beyond
论文作者
论文摘要
局部恒定的越过场近似（LCFA）是对各种强场量子电动力学效应的理论和数值研究的强大工具。我们详细探讨了通过强时间依赖性电场中无旋转粒子发射光子发射的近似值。这种电磁场特别感兴趣，因为与经过全面研究的平面波的情况相反，它们没有被交叉。我们开发了一种计算一般时间依赖性电场中光子发射概率的方法，建立LCFA的适用性范围，并计算其校正。
Locally constant crossed field approximation (LCFA) is a powerful tool for theoretical and numerical studies of various strong field quantum electrodynamical effects. We explore this approximation in detail for photon emission by a spinless particle in a strong time-dependent electric field. This kind of electromagnetic fields is of particular interest, because, in contrast to the comprehensively studied case of a plane wave, they are not crossed. We develop an approach for calculating photon emission probability in a generic time-dependent electric field, establish the range of applicability of LCFA, and calculate the corrections to it.
