Master formulas for N -photon tree level amplitudes in plane wave backgrounds
Master formulas for N -photon tree level amplitudes in plane wave backgrounds
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平面波背景中N光子树级振幅的主公式
DOI：
10.1103/physrevd.109.065003
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发表时间：
2024
影响因子：
5
通讯作者：
Copinger P
中科院分区：
文献类型：
--
作者：
Copinger P
强电磁场的存在给 QED 费曼图增加了巨大的复杂性，因此需要新的方法来计算更高环路和更高多重性的散射幅度。在这里，我们使用世界线形式主义提出了平面波背景下标量和旋量 QED 中两个大质量粒子和任意数量光子的所有树级振幅的“主公式”。平面波自始至终都没有进行近似处理，这特别意味着我们的公式在当前理论和实验兴趣的强场范围内是有效的。我们对照通过直接费曼图计算在低重数下获得的文献表达来检查我们的结果。
The presence of strong electromagnetic fields adds huge complexity to QED Feynman diagrams, such that new methods are required to calculate higher-loop and higher-multiplicity scattering amplitudes. Here we use the worldline formalism to present “master formulas” for all tree level amplitudes of two massive particles and an arbitrary number of photons, in a plane wave background, in both scalar and spinor QED. The plane wave is treated without approximation throughout, meaning in particular that our formulas are valid in the strong-field regime of current theoretical and experimental interest. We check our results against literature expressions obtainable at low multiplicity via direct Feynman diagram calculations.