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arXiv 1402.6063quant-ph
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量子相对论粒子沿经典轨道传播中的自旋态

Spin state in the propagation of quantum relativistic particles along classical trajectories

Jesús Rubio, Alfredo Luis

摘要:

本文研究了1/2自旋粒子在标量势作用下服从Dirac方程的自旋沿经典轨道的传播。聚焦于经典轨迹作为波函数不连续性的精确传播,我们发现狄拉克振荡器的情况下,一个明确的自旋输运定律。在一般情况下,我们研究的自旋传播沿经典的轨迹出现作为一个近似的量子动力学通过力学模拟的光学程函渐近方法。在整个过程中,我们尽可能多地建立与电磁场的等效情况的相似之处。

英文摘要:

We address the propagation of the spin along classical trajectories for a 1/2-spin particle obeying the Dirac equation with scalar potentials. Focusing on classical trajectories as the exact propagation of wave-function discontinuities we find an explicit spin-transport law for the case of the Dirac oscillator. In the general case we examine the spin propagation along classical trajectories emerging as an approximation of the quantum dynamics via the mechanical analog of the optical eikonal asymptotic approach. Throughout we establish as many parallels as possible with the equivalent situation for the electromagnetic field.

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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