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arXiv 1003.5224cond-mat.dis-nncond-mat.str-el
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无限温度下无序量子晶格模型的电导率:多体局域化

Conductivity of disordered quantum lattice models at infinite temperature: Many-body localization

Timothy C. Berkelbach, David R. Reichman

摘要:

利用精确对角化方法重新研究了几种无序量子晶格模型在无限温度下的电导率行为。与最近对相同系统中相似量的研究所得出的结论相反,我们发现了强随机场局部区域的证据。我们估计了无规场XXZ自旋链的多体局域化跃迁的临界场位置,并将我们的结果与最近在相关系统中的研究结果进行了比较。

英文摘要:

We reinvestigate the behavior of the conductivity of several disordered quantum lattice models at infinite temperature using exact diagonalization. Contrary to the conclusion drawn in a recent investigation of similar quantities in identical systems, we find evidence of a localized regime for strong random fields. We estimate the location of the critical field for the many-body localization transition for the random-field XXZ spin chain, and compare our findings with recent investigations in related 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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