Sufficient conditions for topological order in insulators

被引：69
|
作者：
Hastings, MB [1 ]
机构：
[1] Los Alamos Natl Lab, Ctr Nonlinear Studies & Theoret Div, Los Alamos, NM 87545 USA
来源：
EUROPHYSICS LETTERS | 2005年 / 70卷 / 06期
关键词：
D O I：
10.1209/epl/i2005-10046-x
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We prove the existence of low-energy excitations in insulating systems at general filling factor under certain conditions, and discuss in which cases these may be identified as topological excitations. In the specific case of half-filling this proof provides a significantly shortened proof of the recent higher-dimensional Lieb-Schultz-Mattis theorem.
引用
收藏
页码：824 / 830
页数：7
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