Long-range correlations in the nonequilibrium quantum relaxation of a spin chain

被引：121
|
作者：
Iglói, F
Rieger, H
机构：
[1] Res Inst Solid State Phys & Opt, H-1525 Budapest, Hungary
[2] Univ Szeged, Inst Theoret Phys, H-6720 Szeged, Hungary
[3] Univ Saarland, D-66041 Saarbrucken, Germany
来源：
PHYSICAL REVIEW LETTERS | 2000年 / 85卷 / 15期
关键词：
D O I：
10.1103/PhysRevLett.85.3233
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We consider the nonstationary quantum relaxation of the Ising spin chain in a transverse field of strength h. Starting from a homogeneously magnetized initial state the system approaches a stationary state by a process possessing quasi-long-range correlations in time and space, independent of the value of h. In particular, the system exhibits aging (or lack of time-translational invariance on intermediate time scales) although no indications of coarsening are present.
引用
收藏
页码：3233 / 3236
页数：4
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