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arXiv quant-ph/0306106quant-ph
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利用到达时间分布研究自由粒子的自旋相关可观测效应

Spin dependent observable effect for free particles using the arrival time distribution

Md. Manirul Ali, A. S. Majumdar, D. Home, S. Sengupta

摘要:

利用量子几率流计算自由粒子的平均到达时间。虽然薛定谔几率流具有固有的非唯一性,但这在狄拉克方程的非相对论极限下是唯一确定的。由于狄拉克概率流包含自旋相关项,因此基于概率流的到达时间分布显示出可观察到的自旋相关效应,即使对于自由粒子也是如此。这基本上是由相对论量子动力学引起的,但即使在非相对论体系中也存在。

英文摘要:

The mean arrival time of free particles is computed using the quantum probability current. This is uniquely determined in the non-relativistic limit of Dirac equation, although the Schroedinger probability current has an inherent non-uniqueness. Since the Dirac probability current involves a spin-dependent term, an arrival time distribution based on the probability current shows an observable spin-dependent effect, even for free particles. This arises essentially from relativistic quantum dynamics, but persists even in the non-relativistic regime.

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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