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arXiv 1706.04088cond-mat.dis-nncond-mat.quant-gascond-mat.stat-mech
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一维无序系统中幂律局域化的对偶性

Duality in power-law localization in disordered one-dimensional systems

X. Deng, V. E. Kravtsov, G. V. Shlyapnikov, L. Santos

摘要:

在许多物理系统中,钉扎粒子之间的激发输运可以映射到具有幂律跳跃的单粒子模型$1/r^a$。对于随机间隔的粒子,这些模型提出了一个有效的奇特的混乱,导致令人惊讶的本地化特性。我们表明,在一维系统中,几乎所有的本征态(除了少数国家接近基态)的幂律本地化的任何值的$a>0$。此外,我们表明,我们的模型是一个新的普适性类的模型与幂律跳跃,其特征在于系统之间的对偶性与远程跳($a<1$)和短程跳($a>1$),其中波函数振幅下降代数相同的权力$γ$从本地化中心。

英文摘要:

The transport of excitations between pinned particles in many physical systems may be mapped to single-particle models with power-law hopping, $1/r^a$. For randomly spaced particles, these models present an effective peculiar disorder that leads to surprising localization properties. We show that in one-dimensional systems almost all eigenstates (except for a few states close to the ground state) are power-law localized for any value of $a>0$. Moreover, we show that our model is an example of a new universality class of models with power-law hopping, characterized by a duality between systems with long-range hops ($a<1$) and short-range hops ($a>1$) in which the wave function amplitude falls off algebraically with the same power $γ$ from the localization center.

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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