Particle-beam scattering from strong-field QED
Particle-beam scattering from strong-field QED
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DOI：
10.1103/physrevd.104.116013
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发表时间：
2021-10
影响因子：
5
通讯作者：
T. Adamo;A. Ilderton;A. Macleod
中科院分区：
文献类型：
--
作者：
T. Adamo;A. Ilderton;A. Macleod
我们考虑探针粒子在超增强电荷束上的散射，在束流场很强且必须进行非扰动处理的情况下。我们表明，超增强光束的场充当随机平面波 - 通过对所有可能的平面波参数平均平面波散射振幅，无需近似即可获得散射振幅（弹性散射、非线性康普顿和非线性布赖特-惠勒）。相关的平面波是超短的，因此，超增强光束上的散射不会表现出基于局部恒定场近似推测的 QED 强场行为。
We consider the scattering of probe particles on an ultra-boosted beam of charge, in the case that the fields of the beam are strong and must be treated non-perturbatively. We show that the fields of the ultra-boosted beam act as stochastic plane waves – scattering amplitudes (of elastic scattering, nonlinear Compton and nonlinear Breit-Wheeler) are obtained without approximation by averaging plane wave scattering amplitudes over all possible plane wave parameters. The relevant plane waves are ultra-short and, as such, scattering on ultra-boosted beams does not exhibit the conjectured strong-field behaviour of QED based on the locally constant field approximation.