Local Conservation Laws and the Structure of the Many-Body Localized States

被引：746
作者：
Serbyn, Maksym [1 ]
Papic, Z. [2 ]
Abanin, Dmitry A. [3 ,4 ]
机构：
[1] MIT, Dept Phys, Cambridge, MA 02138 USA
[2] Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA
[3] Perimeter Inst Theoret Phys, Waterloo, ON N2L 2Y5, Canada
[4] Inst Quantum Comp, Waterloo, ON N2L 3G1, Canada
来源：
PHYSICAL REVIEW LETTERS | 2013年 / 111卷 / 12期
基金：
美国国家科学基金会;
关键词：
ELECTRON; DYNAMICS;
D O I：
10.1103/PhysRevLett.111.127201
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We construct a complete set of local integrals of motion that characterize the many-body localized (MBL) phase. Our approach relies on the assumption that local perturbations act locally on the eigenstates in the MBL phase, which is supported by numerical simulations of the random-field XXZ spin chain. We describe the structure of the eigenstates in the MBL phase and discuss the implications of local conservation laws for its nonequilibrium quantum dynamics. We argue that the many-body localization can be used to protect coherence in the system by suppressing relaxation between eigenstates with different local integrals of motion.
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页数：5
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