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arXiv 0905.1079cond-mat.stat-mech
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两个量子系统间热接触的突变

Sudden change of the thermal contact between two quantum systems

J. Restrepo, S. Camalet

摘要:

在本文中,我们解决的问题的热平衡的大量子系统之间的热接触的变化的稳定性。本文研究了两个耦合的一维腔体中自由玻色子场在腔体间接触突变后的薛定谔时间演化。虽然我们所考虑的耦合是非常小的,修改它对系统的两点关联函数有相当大的影响。我们发现,他们不返回平衡,但基本上振荡的周期成正比的腔的长度。我们比较了这种耦合腔系统与理想气体,这是由类似的表达式描述,但行为非常不同。

英文摘要:

In this paper, we address the issue of the stability of the thermal equilibrium of large quantum systems with respect to variations of the thermal contact between them. We study the Schrödinger time evolution of a free bosonic field in two coupled one-dimensional cavities after a sudden change of the contact between the cavities. Though the coupling we consider is thermodynamically small, modifying it has a considerable impact on the two-point correlation functions of the system. We find that they do not return to equilibrium but essentially oscillate with a period proportional to the length of the cavities. We compare this coupled cavities system with the perfect gas which is described by similar expressions but behaves very differently.

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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