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arXiv 0704.0418cond-mat.dis-nnquant-ph
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高维无限随机不动点的纠缠熵

Entanglement entropy at infinite randomness fixed points in higher dimensions

Yu-Cheng Lin, Ferenc Igloi, Heiko Rieger

摘要:

用强无序重整化群的数值方法研究了二维随机横截面伊辛模型的纠缠熵。单位表面积熵的渐近行为在且仅在由无限随机不动点控制的量子相变处发散。在这里,我们确定了一个双对数乘法修正面积定律的纠缠熵。这与在更高维度的稀释横向伊辛模型中在无限随机不动点处有效的纯面积定律形成对比。

英文摘要:

The entanglement entropy of the two-dimensional random transverse Ising model is studied with a numerical implementation of the strong disorder renormalization group. The asymptotic behavior of the entropy per surface area diverges at, and only at, the quantum phase transition that is governed by an infinite randomness fixed point. Here we identify a double-logarithmic multiplicative correction to the area law for the entanglement entropy. This contrasts with the pure area law valid at the infinite randomness fixed point in the diluted transverse Ising model in higher dimensions.

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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