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arXiv 1309.7860quant-phcond-mat.str-el
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耗散量子系统的动力学态

Dynamical regimes of dissipative quantum systems

D. M. Kennes, O. Kashuba, V. Meden

摘要:

我们揭示了几个不同的制度的弛豫动力学耦合到一个小的量子系统的耗散强度和水库温度的平面内的环境。这是通过区分所有时间尺度上的阻尼振荡行为的相干动力学,部分相干行为在中间时间是非单调的,但在大的单调,和纯粹的单调非相干衰减。令人惊讶的是,升高的温度可以通过诱导从部分相干到相干状态的转变而使系统“更相干”。这为开放量子系统的弛豫动力学提供了一个精确的视角。

英文摘要:

We reveal several distinct regimes of the relaxation dynamics of a small quantum system coupled to an environment within the plane of the dissipation strength and the reservoir temperature. This is achieved by discriminating between coherent dynamics with damped oscillatory behavior on all time scales, partially coherent behavior being nonmonotonic at intermediate times but monotonic at large ones, and purely monotonic incoherent decay. Surprisingly, elevated temperature can render the system `more coherent' by inducing a transition from the partially coherent to the coherent regime. This provides a refined view on the relaxation dynamics of open quantum systems.

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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