Bounds on the speed of information propagation in disordered quantum spin chains

被引：105

作者：

Burrell, Christian K. ^{[1
]}

Osborne, Tobias J. ^{[1
]}

机构：

[1] Univ London Royal Holloway, Dept Math, Egham TW20 0EX, Surrey, England

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 99卷 / 16期

关键词：

Correlation methods - Mathematical models;

D O I：

10.1103/PhysRevLett.99.167201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the propagation of information through the disordered XY model. We find that all correlations, both classical and quantum, are exponentially suppressed outside of an effective light cone whose radius grows at most logarithmically with |t|.

引用

页数：4

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