Note on Klein–Nishina effect in strong-field QED: the case of nonlinear Compton scattering

IF 1.5 4区物理与天体物理 Q3 OPTICS

The European Physical Journal D Pub Date : 2025-04-15 DOI:10.1140/epjd/s10053-025-00981-4

U. Hernandez Acosta, B. Kämpfer

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Abstract

Suitably normalized differential probabilities of one-photon emission in external electromagnetic fields are compared to quantify the transit of nonlinear Compton scattering to linear Compton scattering, described by the Klein–Nishina formula, and to constant-crossed field treatment. The known Klein–Nishina suppression at large energies is further enforced by increasing field intensity. In view of the Ritus–Narozhny conjecture, we demonstrate that different paths in the field intensity versus energy plane toward large values of the quantum nonlinearity parameter \(\chi \) facilitate significantly different asymptotic dependencies, both in the Klein–Nishina regime and the constant-crossed field regime and in between.

Differential perspective on the Klein-Nishina effect in strong-field QED: showing the smooth transition from the constant-crossed field (CCF) through the infinite plane-wave approximation (IPA) to the linear Klein-Nishina limit, highlighting the asymptotic behavior of the differential cross sections.

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强场QED中Klein-Nishina效应的注记：以非线性康普顿散射为例

通过对外部电磁场中单光子发射的适当归一化微分概率进行比较，量化了非线性康普顿散射向用Klein-Nishina公式描述的线性康普顿散射的过渡，以及向常交叉场处理的过渡。已知的克莱因-西西那抑制在大能量下通过增加场强得到进一步加强。根据Ritus-Narozhny猜想，我们证明了在Klein-Nishina区和常交叉场区以及两者之间，场强度与能量平面的不同路径对量子非线性参数\(\chi \)的大值促进了显著不同的渐近依赖关系。强场QED中Klein-Nishina效应的微分视角：展示了从常交叉场（CCF）通过无限平面波近似（IPA）到线性Klein-Nishina极限的平滑过渡，突出了微分截面的渐近行为。

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来源期刊

The European Physical Journal D 物理-物理：原子、分子和化学物理

CiteScore

3.10

自引率

11.10%

发文量

213

审稿时长

3 months

期刊介绍： The European Physical Journal D (EPJ D) presents new and original research results in: Atomic Physics; Molecular Physics and Chemical Physics; Atomic and Molecular Collisions; Clusters and Nanostructures; Plasma Physics; Laser Cooling and Quantum Gas; Nonlinear Dynamics; Optical Physics; Quantum Optics and Quantum Information; Ultraintense and Ultrashort Laser Fields. The range of topics covered in these areas is extensive, from Molecular Interaction and Reactivity to Spectroscopy and Thermodynamics of Clusters, from Atomic Optics to Bose-Einstein Condensation to Femtochemistry.