厄米-高斯和拉盖尔-高斯脉冲光束的光子偏振张量
The photon polarization tensor in pulsed Hermite- and Laguerre-Gaussian beams
摘要：
本文给出了厄米-高斯和拉盖尔-高斯脉冲激光束中光子偏振张量的解析表达式。我们的结果是基于一个局部恒定场近似的单圈海森堡-欧拉有效拉格朗日量子电动力学。因此，通过构造，它们仅限于缓慢变化的电磁场，其在空间和时间尺度上的变化显著大于电子的康普顿波长/时间。我们的研究结果将，例如，相关的真空双折射的研究所经历的探测光子与高强度的激光脉冲，可以表示为厄米或拉盖尔高斯模式的叠加碰撞。
英文摘要：
In this article, we provide analytical expressions for the photon polarization tensor in pulsed Hermite- and Laguerre-Gaussian laser beams. Our results are based on a locally constant field approximation of the one-loop Heisenberg-Euler effective Lagrangian for quantum electrodynamics. Hence, by construction they are limited to slowly varying electromagnetic fields, varying on spatial and temporal scales significantly larger than the Compton wavelength/time of the electron. The latter criterion is fulfilled by all laser beams currently available in the laboratory. Our findings will, e.g., be relevant for the study of vacuum birefringence experienced by probe photons brought into collision with a high-intensity laser pulse which can be represented as a superposition of either Hermite- or Laguerre-Gaussian modes.
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。
