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arXiv 0806.2244quant-phhep-th
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QED中弹性$e^{+}e^{-}$散射的自旋关联

Spin correlations in elastic $e^{+}e^{-}$ scattering in QED

Nattapong Yongram

备注：
9 pages, 2 figures
发表信息：
Eur. Phys. J. D 47, 71-74 (2008)
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摘要：

在弹性$e^{+}e^{-}$散射QED仔细研究自旋相关，最初\textit{polarized}以及\textit{unpolarized}粒子，重点放在能量或速度的基础上的粒子参与的过程。导出了相应的转移概率的显式表达式。这些表达式不同于简单地将具有运动学性质的相关粒子的自旋组合而得到的表达式。值得注意的是，从量子场论得到的这些明确的结果表明，在支持相对论体系中的量子理论的\textit{all}能量下，贝尔不等式明显地被违反。我们希望，我们得到的显式表达式将导致实验的方式在本文的大部分内容中描述的监测速度。

英文摘要：

Spin correlations are carefully investigated in elastic $e^{+}e^{-}$ scattering in QED, for initially \textit{polarized} as well as \textit{unpolarized} particles, with emphasis placed on energy or speed of the underlying particles involved in the process. An explicit expression is derived for the corresponding transition probabilities in closed form to the leading order. These expressions are unlike the ones obtained from simply combining spins of the relevant particles which are of kinematic nature. It is remarkable that these explicit results obtained from quantum field theory show a clear violation of Bell's inequality at \textit{all} energies in support of quantum theory in the relativistic regime. We hope that our explicit expression obtained will lead to experiments in the manner described in the bulk of this paper by monitoring speed.

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