Direct Accessibility of the Fundamental Constants Governing Light-by-Light Scattering,Physical Review Letters

当前位置： X-MOL 学术 › Phys. Rev. Lett. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Direct Accessibility of the Fundamental Constants Governing Light-by-Light Scattering
Physical Review Letters ( IF 8.1 ) Pub Date : 2022-08-02 , DOI: 10.1103/physrevlett.129.061802
Felix Karbstein _{1,

2,

3} , Daniel Ullmann ₃ , Elena A Mosman _{1,

3} , Matt Zepf _{1,

2,

3}

Affiliation

Quantum field theory predicts that the vacuum exhibits a nonlinear response to strong electromagnetic fields. This fundamental tenet has remained experimentally challenging and is yet to be tested in the laboratory. We present proof of concept and detailed theoretical analysis of an experimental setup for precision measurements of the quantum vacuum signal generated by the collision of a brilliant x-ray probe with a high-intensity pump laser. The signal features components polarized parallel and perpendicularly to the incident x-ray probe. Our proof-of-concept measurements show that the background can be efficiently suppressed by many orders of magnitude which should not only facilitate a detection of the perpendicularly polarized component of the nonlinear vacuum response, but even make the parallel polarized component experimentally accessible for the first time. Remarkably, the angular separation of the signal from the intense x-ray probe enables precision measurements even in the presence of pump fluctuations and alignment jitter. This provides direct access to the low-energy constants governing light-by-light scattering.

中文翻译：

控制逐光散射的基本常数的直接可访问性

量子场论预测，真空对强电磁场表现出非线性响应。这一基本原则在实验上仍然具有挑战性，尚未在实验室中进行测试。我们提供了一个实验装置的概念证明和详细的理论分析，用于精确测量由明亮的 X 射线探头与高强度泵浦激光器碰撞产生的量子真空信号。该信号具有平行和垂直于入射 X 射线探头偏振的分量。我们的概念验证测量表明，背景可以有效地抑制多个数量级，这不仅有助于检测非线性真空响应的垂直极化分量，但甚至是第一次在实验上可以访问平行极化组件。值得注意的是，来自强 X 射线探头的信号的角度分离即使在存在泵波动和对准抖动的情况下也能实现精确测量。这提供了对控制逐个光散射的低能量常数的直接访问。

更新日期：2022-08-02

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文本刊介绍/投稿指南11