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arXiv 0705.2794quant-phcond-mat.stat-mech
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双谐振子系统的弛豫现象

Relaxation Phenomena in a System of Two Harmonic Oscillators

Antonia Chimonidou, E. C. G. Sudarshan

摘要:

我们研究的过程中,量子关联创建时,相互作用哈密顿量被反复施加到一个系统的两个谐振子的一些特征的时间间隔。我们表明,对于振子频率相等的情况下,初始麦克斯韦-玻尔兹曼分布的非耦合部分演变到一个新的平衡麦克斯韦-玻尔兹曼分布通过一系列的瞬态麦克斯韦-玻尔兹曼分布。此外,我们讨论了为什么达到平衡时,两个振荡器的频率是不平等的,是不是一个热的。所有的计算都是精确的,并且结果是通过迭代过程获得的,而没有使用微扰理论。

英文摘要:

We study the process by which quantum correlations are created when an interaction Hamiltonian is repeatedly applied to a system of two harmonic oscillators for some characteristic time interval. We show that, for the case where the oscillator frequencies are equal, the initial Maxwell-Boltzmann distributions of the uncoupled parts evolve to a new equilibrium Maxwell-Boltzmann distribution through a series of transient Maxwell-Boltzmann distributions. Further, we discuss why the equilibrium reached when the two oscillator frequencies are unequal, is not a thermal one. All the calculations are exact and the results are obtained through an iterative process, without using perturbation theory.

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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