论文标题
为什么宏观实验可重现？模仿单个纯状态的合奏行为
Why are macroscopic experiments reproducible? Imitating the behavior of an ensemble by single pure states
论文作者
论文摘要
显然，即使初始波函数的完全相同的制备通常远远超出了实验性的可能性，实际上实际上是可再现的。因此，很自然地探索以及在何种意义上，初始波函数的特定，不可控制的特征与实验的可观察过程无关。为此，我们定义了纯状态的集合，然后证明这些团体会产生非常相似的非平衡动力学，对实际上所有标准可观察物的期望值。构建合奏以遵守一些有关系统状态的简化，粗略的先验信息，例如但是，有一些具体的期望值等。但是，具有不同额外属性的不同类型的合奏是可能的。我们讨论其中的一些。
Evidently, physical experiments are practically reproducible even though the fully identical preparation of initial state wave functions is often far beyond experimental possibilities. It is thus natural to explore if and in which sense specific, uncontrollable features of initial wave functions are irrelevant for the observable course of an experiment. To this end we define ensembles of pure states which are then shown to generate extremely similar non-equilibrium dynamics of the expectation values of practically all standard observables. The ensembles are constructed to comply with some reduced, coarse a priori information on the state of the system, like, e.g. a few specific expectation values, etc. However, different types of ensembles with different additional properties are possible. We discuss some of them.
