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arXiv 2012.07094physics.plasm-phastro-ph.HEphysics.acc-ph
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相对论电动力学的光前方法

Light-front approach to relativistic electrodynamics

Gaetano Fiore

AI总结:

该研究提出光前方法,以光样坐标替代时间简化相对论电动力学,适用于真空和等离子体中极端加速场景,如弹弓效应和激光尾场加速。

摘要:

我们展示了最近提出的光前方法如何简化相对论电动力学,其中电磁(EM)场$F^{μν}$是(甚至非常强的)平面行波$F_t^{μν}(ct\!-\!z)$与静态部分$F_s^{μν}(x,y,z)$之和;该方法采用光样坐标$ξ=ct\!-\!z$而非时间$t$作为自变量。这可以应用于多种极端加速情形,既包括真空中的情况,也包括被极短且强激光脉冲轰击的冷稀薄等离子体中的情况(弹弓效应、等离子体波破和激光尾场加速等)。

英文摘要:

We illustrate how our recent light-front approach simplifies relativistic electrodynamics with an electromagnetic (EM) field $F^{μν}$ that is the sum of a (even very intense) plane travelling wave $F_t^{μν}(ct\!-\!z)$ and a static part $F_s^{μν}(x,y,z)$; it adopts the light-like coordinate $ξ=ct\!-\!z$ instead of time $t$ as an independent variable. This can be applied to several cases of extreme acceleration, both in vacuum and in a cold diluted plasma hit by a very short and intense laser pulse (slingshot effect, plasma wave-breaking and laser wake-field acceleration, etc.)

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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