Typical pure states and the analysis of nonequilibrium processes of mesoscopic systems
Typical pure states and the analysis of nonequilibrium processes of mesoscopic systems
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介观系统典型纯态及非平衡过程分析
DOI：
10.1088/1742-5468/2016/05/054004
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
and Ayumu Sugita
中科院分区：
文献类型：
--
作者：
Takaaki Monnai;and Ayumu Sugita
对于孤立的量子多体系统，我们将典型纯态的内禀热性质的可用性推广到一类从初始平衡开始的非平衡过程。为了具体起见，我们计算了在单个纯态的基础上对系统所做的功的谱分布。这意味着我们只能从单个纯态而不是热力学系综准确地计算能量的整个波动。
For isolated quantum many-body systems, we extend the availability of the intrinsic thermal nature of typical pure states to a class of nonequilibrium processes which start from an initial equilibrium. For concreteness, we calculate the spectral distribution of the work done on the system on the basis of a single pure state. It means that we can accurately calculate the entire fluctuation of the energy only from a single pure state instead of the thermodynamic ensembles.