Equilibration of isolated many-body quantum systems with respect to general distinguishability measures.
Equilibration of isolated many-body quantum systems with respect to general distinguishability measures.
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孤立多体量子系统相对于一般可区分性测量的平衡
DOI：
10.1103/physreve.93.062107
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
P. Reimann
中科院分区：
文献类型：
--
作者：
B. N. Balz;P. Reimann
我们证明了孤立多体系统的平衡，在这个意义上说，在初始瞬变消失后，系统的行为实际上与时间无关的稳态，即，不可忽略的偏差在时间上是极其罕见的。测量量子力学的期望值的可扩展性，这种类型的结果已经建立在越来越弱的假设下的初始不平衡，多体哈密顿量，并考虑可观的。在这里，我们进一步扩展这些结果的广义可测量性措施，充分考虑到这一事实，即实际观察到的，主要的数据不是期望值，而是不同的可能的测量结果的概率发生。
We demonstrate equilibration of isolated many-body systems in the sense that, after initial transients have died out, the system behaves practically indistinguishable from a time-independent steady state, i.e., non-negligible deviations are unimaginably rare in time. Measuring the distinguishability in terms of quantum mechanical expectation values, results of this type have been previously established under increasingly weak assumptions about the initial disequilibrium, the many-body Hamiltonian, and the considered observables. Here, we further extend these results with respect to generalized distinguishability measures which fully take into account the fact that the actually observed, primary data are not expectation values but rather the probabilistic occurrence of different possible measurement outcomes.
DOI：
10.1073/pnas.46.2.257
发表时间：
1960-02
影响因子：
11.1
作者：
J. Schwinger
通讯作者：
J. Schwinger