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arXiv 0810.0985quant-phhep-thnucl-th
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或然观测量、条件关联与量子物理

Probabilistic observables, conditional correlations, and quantum physics

C. Wetterich

摘要:

我们讨论孤立子系统的经典统计。子系统及其环境的经典概率分布中所包含的信息只有一小部分可用于描述孤立子系统。对微观状态的“信息粗粒化”意味着概率可观测量。对于两级概率观测量,对于任何微观状态,只能给出找到值1或-1的概率,而这些观测量可以实现为子状态水平上具有尖锐值的经典观测量。对于一个由球参数化的连续族微态,所有的两态系统的量子力学定律都遵循系综的纯度由时间演化守恒的假设。量子力学的非对易关联函数对应于经典统计学中条件关联函数的使用。我们进一步讨论了对应于四态量子力学的系统中纠缠的经典统计实现。我们的结论是,量子力学可以从一个经典的统计设置无限多的微观状态。

英文摘要:

We discuss the classical statistics of isolated subsystems. Only a small part of the information contained in the classical probability distribution for the subsystem and its environment is available for the description of the isolated subsystem. The "coarse graining of the information" to micro-states implies probabilistic observables. For two-level probabilistic observables only a probability for finding the values one or minus one can be given for any micro-state, while such observables can be realized as classical observables with sharp values on a substate level. For a continuous family of micro-states parameterized by a sphere all the quantum mechanical laws for a two-state system follow under the assumption that the purity of the ensemble is conserved by the time evolution. The non-commutative correlation functions of quantum mechanics correspond to the use of conditional correlation functions in classical statistics. We further discuss the classical statistical realization of entanglement within a system corresponding to four-state quantum mechanics. We conclude that quantum mechanics can be derived from a classical statistical setting with infinitely many micro-states.

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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