发表机构
Sharif University of Technology(谢里夫理工大学)
机构由 AI 辅助整理,请以论文原文为准。AI 中文总结
该研究通过对狄拉克-麦克斯韦拉格朗日量取非相对论极限,推导Breit相互作用并计算其修正项,分析相关自旋效应,给出了实验暂无法获取的理论估计值。
AI 中文摘要
人们自然会认为电磁自旋-自旋相互作用源于更基础的理论,即量子电动力学。为证明这一点,我们采用Foldy-Wouthuysen变换对狄拉克-麦克斯韦拉格朗日量取非相对论极限,通过另一种方法推导出Breit相互作用。通过加入泡利项(即自旋与电磁场之间的高阶相互作用),我们计算了非相对论极限下电磁自旋-自旋相互作用的修正项。最后,我们研究了这些项在自旋-自旋相互作用和自旋-自旋纠缠方面的一些物理效应,并给出了当前实验尚无法获得的理论估计值。
英文摘要
It is natural to expect that the electromagnetic spin-spin interaction has roots in a more fundamental theory: quantum electrodynamics in this case. To show this, we take the non-relativistic limit of the Dirac-Maxwell Lagrangian, using the Foldy-Wouthuysen transformation and derive the Breit interaction by an alternative approach. By adding the Pauli term (i.e., a higher-order interaction between spin and the electromagnetic field), we calculate the correction terms to electromagnetic spin-spin interactions in the non-relativistic limit. Finally, we study some of the physical effects of these terms regarding spin-spin interactions and spin-spin entanglements. Accordingly, we provide theoretical estimates that are not yet accessible with current experiments.
Comments12 pages