Non-equilibrium quench dynamics in quantum quasicrystals

被引：21

作者：

Igloi, Ferenc ^{[1
,2
]}

Roosz, Gergo ^{[1
,2
]}

Lin, Yu-Cheng ^{[3
]}

机构：

[1] Wigner Res Ctr, Inst Solid State Phys & Opt, H-1525 Budapest, Hungary

[2] Univ Szeged, Inst Theoret Phys, H-6720 Szeged, Hungary

[3] Natl Chengchi Univ, Grad Inst Appl Phys, Taipei 11623, Taiwan

来源：

NEW JOURNAL OF PHYSICS | 2013年 / 15卷

关键词：

ISING-MODEL; CRITICAL-BEHAVIOR; STATISTICAL-MECHANICS; TRANSVERSE-FIELD; SURFACE MAGNETIZATION; ANOMALOUS DIFFUSION; WAVE-FUNCTIONS; XY-MODEL; RELAXATION; DISORDER;

D O I：

10.1088/1367-2630/15/2/023036

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the non-equilibrium dynamics of a quasiperiodic quantum Ising chain after a sudden change in the strength of the transverse field at zero temperature. In particular, we consider the dynamics of the entanglement entropy and the relaxation of the magnetization. The entanglement entropy increases with time as a power law, and the magnetization is found to exhibit stretched exponential relaxation. These behaviors are explained in terms of anomalously diffusing quasiparticles, which are studied in a wave packet approach. The non-equilibrium magnetization is shown to have a dynamical phase transition.

引用

页数：20

共 117 条

[1]

Aubry S., 1980, Annals of the Israel Physical Society, V3, P133

[2] Strong and Weak Thermalization of Infinite Nonintegrable Quantum Systems [J].