A generalized Bell-Inequality and Decoherence for the K 0 K 0 -System
A generalized Bell-Inequality and Decoherence for the K 0 K 0 -System
复制标题
K 0 K 0 系统的广义贝尔不等式和退相干
DOI：
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发表时间：
2000
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通讯作者：
B. Hiesmayr
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作者：
B. Hiesmayr
首先，我们得到了关于离散时间和离散准自旋态的一个推广的Bell不等式。我们专注于特殊的准自旋本征态和时间。如果使用量子理论重新计算概率，则CP破坏参数[1]破坏了基于局部实在论的不等式。其次，利用退相干方法修正量子力学几率，使初始态自发分解。这样我们就得到了一个衡量退相干程度的退相干参数的下限。该结果与从CPLEAR实验[4]的数据推导出的退相干参数的实验值[2，3]进行了比较。
First a generalized Bell-inequality for dierent times and for dierent quasispin states is developed. We focus on special quasi-spin eigenstates and times. The inequality based on a local realistic theory is violated by the CP-violating parameter [1], if the quantum theory is used to recalculate the probabilities. Next the quantum mechanical probabilities are modied by the decoherence approach which enables the initial state to factorize spontaneously. In this way we get a lower limit for the decoherence parameter , which measures the degree of decoherence. This result is compared with the experimental value [2, 3] of the decoherence parameter deduced from the data of the CPLEAR-experiment [4].