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arXiv math-ph/0410014math-phmath.MP
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非平衡统计力学中的正交换子

Positive Commutators in Non-Equilibrium Statistical Mechanics

Marco Merkli

摘要:

在过去的二十年里,正向算符方法被发展用于零温度问题,它已经成为量子力学中哈密顿量谱分析的一个重要工具。我们将这种方法推广到正温度,即非平衡量子统计力学。本文利用正交换子技术给出了一类大型量子系统的一个基本性质的另一种证明,称为{ \it返回平衡}。这个性质表明平衡态是(渐近)稳定的:如果一个系统从它的平衡态受到轻微的扰动,那么随着时间的推移,它会收敛到那个平衡态。

英文摘要:

The method of positive commutators, developed for zero temperature problems over the last twenty years, has been an essential tool in the spectral analysis of Hamiltonians in quantum mechanics. We extend this method to positive temperatures, i.e. to non-equilibrium quantum statistical mechanics. We use the positive commutator technique to give an alternative proof of a fundamental property of a certain class of large quantum systems, called {\it Return to Equilibrium}. This property says that equilibrium states are (asymptotically) stable: if a system is slightly perturbed from its equilibrium state, then it converges back to that equilibrium state as time goes to infinity.

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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