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arXiv quant-ph/0003041quant-ph
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一致的历史,量子芝诺效应和到达时间

Consistent histories, the quantum Zeno effect, and time of arrival

I. L. Egusquiza, J. G. Muga

摘要:

我们提出了一个分解的一般量子力学演化算子,对应于路径分解展开,并解释其成分的量子芝诺效应(QZE)。这种分解被应用到一个有限维的例子和一个自由粒子的情况下,在真正的线,在那里的边界条件的可能性比那些迄今为止在文献中考虑的更一般。我们重新解释分配的一致性概率的不同区域的时空的QZE。比较的方法一致的历史问题的到达时间与解决方案所提供的概率分布的Kijowski显示的力量,后者的观点。

英文摘要:

We present a decomposition of the general quantum mechanical evolution operator, that corresponds to the path decomposition expansion, and interpret its constituents in terms of the quantum Zeno effect (QZE). This decomposition is applied to a finite dimensional example and to the case of a free particle in the real line, where the possibility of boundary conditions more general than those hitherto considered in the literature is shown. We reinterpret the assignment of consistent probabilities to different regions of spacetime in terms of the QZE. The comparison of the approach of consistent histories to the problem of time of arrival with the solution provided by the probability distribution of Kijowski shows the strength of the latter point of view.

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