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arXiv 1306.5557quant-phcond-mat.stat-mech
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波函数系综的量子涨落关系

Quantum Fluctuation Relations for Ensembles of Wave Functions

Michele Campisi

摘要:

提出了新的量子涨落关系。与标准方法相比,在标准方法中,驱动系统的初始状态由(微)正则密度矩阵描述,这里我们假设它由波函数的(微)正则分布描述,正如薛定谔最初提出的那样。虽然标准的涨落关系是基于冯·诺依曼测量假设,但这些新的涨落关系并不涉及任何量子坍缩,而是涉及一个功的概念,即哈密顿量的期望变化。

英文摘要:

New quantum fluctuation relations are presented. In contrast with the the standard approach, where the initial state of the driven system is described by the (micro)canonical density matrix, here we assume that it is described by a (micro)canonical distribution of wave functions, as originally proposed by Schrödinger. While the standard fluctuation relations are based on von Neumann measurement postulate, these new fluctuation relations do not involve any quantum collapse, but involve instead a notion of work as the change in expectation of the Hamiltonian.

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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