论文标题
循环和强场QED极化
Loops and polarization in strong-field QED
论文作者
论文摘要
在上一篇论文中，我们展示了如何通过将“强场粘合剂矩阵”的序列乘以长激光脉冲中的高阶强Qed过程。我们获得了对任意场形状和极化有效的表达式。在本文中，我们得出了这些穆勒矩阵的实用近似值，并在本地构体和局部单式现场方案中得出了近似值。我们允许任意激光极化以及任意极化的初始和最终粒子。自旋和极化也可能由于循环贡献（电子的质量运算符和光子的极化算子）而变化。我们也得出了这些矩阵的矩阵。
In a previous paper we showed how higher-order strong-field-QED processes in long laser pulses can be approximated by multiplying sequences of "strong-field Mueller matrices". We obtained expressions that are valid for arbitrary field shape and polarization. In this paper we derive practical approximations of these Mueller matrices in the locally-constant- and the locally-monochromatic-field regimes. We allow for arbitrary laser polarization as well as arbitrarily polarized initial and final particles. The spin and polarization can also change due to loop contributions (the mass operator for electrons and the polarization operator for photons). We derive Mueller matrices for these as well.
