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arXiv 2103.01187cond-mat.dis-nn
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碎片逾渗与多体局域化跃迁

Fragment Percolating and Many Body Localization Transition

Xiaolong Deng

摘要:

通过精确对角化得到的本征向量的元素可以看作是二维格点,其中给定初始状态的动力学过程被看作是在格点上的一个离散过程。然后,可以使用分解过程来生成一系列本征向量的片段。结合所产生碎片的分数比和纠缠熵动力学,我们研究了无序硬核玻色子模型中的多体局域化跃迁。它帮助我们大致定位临界无序强度$W_c\approx 12\sim13$处的转变点。分数比的标度坍缩给出了局域长度指数$ν\approx2.0$。

英文摘要:

Elements of eigenvectors obtained by exact diagonalization can be considered as two dimensional lattice sites, in which dynamics of a given initial state is seen as a percolating procedure on the lattice sites. Then one can use the percolating procedure to generate a series of fragments of eigenvectors. Combining the fraction ratio and entanglement entropy dynamics of the generated fragment we examine the many-body localization transition in a disordered hard-core bosonic model. It helps us to locate roughly the transition point at the critical disorder strength $W_c\approx 12\sim13$. The scaling collapse of the fraction ratios gives us the localization length exponent $ν\approx2.0$.

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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