Quench dynamics of the topological quantum phase transition in the Wen-plaquette model

被引：8
|
作者：
Zhang, Long [1 ,2 ]
Kou, Su-Peng [3 ]
Deng, Youjin [1 ,2 ]
机构：
[1] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China
[2] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Anhui, Peoples R China
[3] Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China
来源：
PHYSICAL REVIEW A | 2011年 / 83卷 / 06期
关键词：
SPIN-CORRELATION FUNCTIONS; COSMOLOGICAL EXPERIMENTS; STRINGS; ANYONS;
D O I：
10.1103/PhysRevA.83.062113
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We study the quench dynamics of the topological quantum phase transition in the two-dimensional transverse Wen-plaquette model, which has a phase transition from a Z(2) topologically ordered to a spin-polarized state. By mapping the Wen-plaquette model onto a one-dimensional quantum Ising model, we calculate the expectation value of the plaquette operator F-i during a slowly quenching process from a topologically ordered state. A logarithmic scaling law of quench dynamics near the quantum phase transition is found, which is analogous to the well-known static critical behavior of the specific heat in the one-dimensional quantum Ising model.
引用
收藏
页数：7
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