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arXiv 0905.3222quant-ph
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关于量子力学中的共存概念

On the notion of coexistence in quantum mechanics

P. Busch, J. Kiukas, P. Lahti

摘要:

量子可观测量共存的概念被引入来描述测量两个或多个可观测量的可能性。在这里,我们调查了这个概念的各种不同的形式化及其联系。我们回顾的例子说明了必要程度的不清晰度为两个noncommuting可观联合测量(在一个意义上的短语)。我们证明了一起测量(在另一种意义上的短语)不共存的可观的可能性。这使我们重新考虑可观测量的联合可测性和非对易性之间的联系,以及量子测量的统计和个体方面。

英文摘要:

The notion coexistence of quantum observables was introduced to describe the possibility of measuring two or more observables together. Here we survey the various different formalisations of this notion and their connections. We review examples illustrating the necessary degrees of unsharpness for two noncommuting observables to be jointly measurable (in one sense of the phrase). We demonstrate the possibility of measuring together (in another sense of the phrase) noncoexistent observables. This leads us to a reconsideration of the connection between joint measurability and noncommutativity of observables and of the statistical and individual aspects of quantum measurements.

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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