Heinzl Tom, Ilderton Anton
Centre for Mathematical Sciences, University of Plymouth, PL4 8AA, United Kingdom.
Phys Rev Lett. 2017 Mar 17;118(11):113202. doi: 10.1103/PhysRevLett.118.113202. Epub 2017 Mar 16.
Analytic results for (Q)ED processes in external fields are limited to a few special cases, such as plane waves. However, the strong focusing of intense laser fields implies a need to go beyond the plane wave model. By exploiting Poincaré symmetry and superintegrability we show how to construct, and solve without approximation, new models of laser-matter interactions. We illustrate the method with a model of a radially polarized (TM) laser beam, for which we exactly determine the classical orbits and quantum wave functions. Including in this way the effects of transverse field structure should improve predictions and analyses for experiments at intense laser facilities.
外部场中量子电动力学（QED）过程的分析结果仅限于少数特殊情况，例如平面波。然而，强激光场的强聚焦意味着需要超越平面波模型。通过利用庞加莱对称性和超可积性，我们展示了如何构建并精确求解新型激光与物质相互作用模型。我们以径向偏振（TM）激光束模型为例进行说明，为此我们精确确定了经典轨道和量子波函数。以这种方式纳入横向场结构的影响，应该会改进对强激光装置实验的预测和分析。
