论文标题
强场政权中的血浆物理学：理论和模拟
Plasma physics in strong-field regimes: theories and simulations
论文作者
论文摘要
在强烈的电磁场中，独特的等离子体现象和应用出现，其描述需要最近发展的理论和模拟[Y. Shi，博士论文，普林斯顿大学（2018）]。在经典状态中，为了量化强磁场对三波相互作用的影响，通过将流体模型求解到一般几何形状中的二阶来得出一个方便的公式。作为一种应用，磁共振被利用以介导激光脉冲压缩，使用粒子中的粒子模拟证实，可以在更广泛的频率范围内产生更高的强度脉冲。在更强大的领域中，相对论量子的效应变得重要，并且开发了基于标量量子电动力学（QED）的血浆模型，在强磁性的等离子体中，它将可观察到的Faraday旋转校正和在Faraday旋转和回旋子吸收中吸收。除了扰动状态之外，晶格QED被扩展为血浆物理学的数值工具，当激光强度超过Schwinger阈值时，从Wakefield加速度到电子峰值对的过渡将被捕获。
In strong electromagnetic fields, unique plasma phenomena and applications emerge, whose description requires recently developed theories and simulations [Y. Shi, Ph.D. thesis, Princeton University (2018)]. In the classical regime, to quantify effects of strong magnetic fields on three-wave interactions, a convenient formula is derived by solving the fluid model to the second order in general geometry. As an application, magnetic resonances are exploited to mediate laser pulse compression, using which higher intensity pulses can be produced in wider frequency ranges, as confirmed by particle-in-cell simulations. In even stronger fields, relativistic-quantum effects become important, and a plasma model based on scalar quantum electrodynamics (QED) is developed, which unveils observable corrections to Faraday rotation and cyclotron absorption in strongly magnetized plasmas. Beyond the perturbative regime, lattice QED is extended as a numerical tool for plasma physics, using which the transition from wakefield acceleration to electron-positron pair production is captured when laser intensity exceeds the Schwinger threshold.
