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arXiv 1005.0342cond-mat.dis-nn
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Bethe晶格上的Anderson模型:态密度、局域化性质和孤立本征值

Anderson model on Bethe lattices: density of states, localization properties and isolated eigenvalue

Giulio Biroli, Guilhem Semerjian, Marco Tarzia

摘要:

我们重新讨论的安德森局域化问题贝特格,把以前只单独讨论的各个方面的联系。对于连通性为3的情况,我们用腔方法计算了态密度和迁移率边随无序度的演化。此外,我们表明,低于一定的临界值的障碍,最小的本征值仍然离域和分离的所有其他(本地化)的间隙。我们还研究了带中心的迁移率边随连通性的演化,并讨论了大连通性极限。

英文摘要:

We revisit the Anderson localization problem on Bethe lattices, putting in contact various aspects which have been previously only discussed separately. For the case of connectivity 3 we compute by the cavity method the density of states and the evolution of the mobility edge with disorder. Furthermore, we show that below a certain critical value of the disorder the smallest eigenvalue remains delocalized and separated by all the others (localized) ones by a gap. We also study the evolution of the mobility edge at the center of the band with the connectivity, and discuss the large connectivity limit.

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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