高能物理中的Bell不等式(英文)

Bell Inequalities in High Energy Physics

评述了在高能物理中检验量子力学的完备性,特别是检验Bell不等式的研究工作进展情况,简略地介绍了Einstain,Podolsky和Rosen(EPR)佯谬及其相应的光子实验得到的结果.概括地阐述了在高能物理中早期利用粒子衰变中的自旋关联以及后来用中性介子的混合形成的准自旋纠缠态检验Bell不等式的各种尝试,给出了K^0和B^0系统的相关实验结果.介绍了一种可在φ工厂中实施实验检验的,基于非最大纠缠态的新的方案.最后还讨论了把这一实验方案推广到τ-粲工厂的可能性.

We review in this paper the research status on testing the completeness of Quantum mechanics in High Energy Physics, especially on the Bell Inequalities. We briefly introduce the basic idea of Einstein, Podolsky, and Rosen paradox and the results obtained in photon experiments. In the content of testing the Bell inequalities in high energy physics, the early attempts of using spin correlations in particle decays and later on the mixing of neutral mesons used to form the quasi-spin entangled states are covered. The related experimental results in K^0 and B^0 systems are presented and discussed. We introduce the new scheme, which is based on the non-maximally entangled state and proposed to implement in Ф factory, in testing the Local Hidden Variable Theory. And, we also discuss about the possibility of realising it to the tau charm factory.