arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1107.2371cond-mat.dis-nnquant-ph
收藏

从封闭到开放的1D Anderson模型:输运与谱统计

From closed to open 1D Anderson model: Transport versus spectral statistics

S. Sorathia, F. M. Izrailev, V. G. Zelevinsky, G. L. Celardo

摘要:

利用包含量子系统中所有混沌和复杂态的能级间距分布的唯象表达式$0 \leq β\leq \infty$,我们证明了有限尺寸一维Anderson模型的输运性质可以用这个参数来表示.具体来说,我们证明了严格的线性关系之间的$β$和归一化的本地化长度的整个过渡从强本地化扩展状态。这一结果允许一个完全在参数$β$和耦合到连续的强度方面来描述开放系统中的所有输运性质。对于非完美耦合,我们的数据显示了一个非常不寻常的内部混乱程度之间的相互作用定义的$β$,和开放程度的模型。实验结果可以在单模波导与体或表面障碍。

英文摘要:

Using the phenomenological expression for the level spacing distribution with only one parameter, $0 \leq β\leq \infty$, covering all regimes of chaos and complexity in a quantum system, we show that transport properties of the one-dimensional Anderson model of finite size can be expressed in terms of this parameter. Specifically, we demonstrate a strictly linear relation between $β$ and the normalized localization length for the whole transition from strongly localized to extended states. This result allows one to describe all transport properties in the open system entirely in terms of the parameter $β$ and strength of coupling to continuum. For non-perfect coupling, our data show a quite unusual interplay between the degree of internal chaos defined by $β$, and degree of openness of the model. The results can be experimentally tested in single-mode waveguides with either bulk or surface disorder.

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。

↑