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arXiv 0706.3607cond-mat.stat-mech
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有限模量子系统输运的Boltzmann方程方法

Boltzmann equation approach to transport in finite modular quantum systems

Mehmet Kadiroglu, Jochen Gemmer

摘要:

研究了有限模量子系统的输运行为。这些系统最近已经通过不同的方法进行了分析。这些方法甚至表明扩散行为,特别是对于有限系统。受这些结果的启发,我们分析和数值,如果在这个意义上,这些系统的动力学是在一个适当的玻尔兹曼方程的协议。我们发现,某些类型的有限模块量子系统的输运行为确实可以用玻尔兹曼方程来描述。然而,玻尔兹曼方程的适用性似乎相当局限于一个非常特定类型的模型。

英文摘要:

We investigate the transport behavior of finite modular quantum systems. Such systems have recently been analyzed by different methods. These approaches indicate diffusive behavior even and especially for finite systems. Inspired by these results we analyze analytically and numerically if and in which sense the dynamics of those systems are in agreement with an appropriate Boltzmann equation. We find that the transport behavior of a certain type of finite modular quantum systems may indeed be described in terms of a Boltzmann equation. However, the applicability of the Boltzmann equation appears to be rather limited to a very specific type of model.

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