Quantum phase transition and entanglement in Li atom system

被引：11
作者：
Si LiMing [1 ]
Hou JiXuan [2 ]
机构：
[1] Beijing Inst Technol, Sch Informat Sci & Technol, Dept Elect Engn, Beijing 100081, Peoples R China
[2] Ecole Normale Super Lyon, CNRS, UMR 5182, Chim Lab, F-69364 Lyon 7, France
来源：
SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY | 2008年 / 51卷 / 11期
关键词：
quantum phase transition; entanglement; von Neumann entropy;
D O I：
10.1007/s11433-008-0180-9
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
By use of the exact diagonalization method, the quantum phase transition and entanglement in a 6-Li atom system are studied. It is found that entanglement appears before the quantum phase transition and disappears after it in this exactly solvable quantum system. The present results show that the von Neumann entropy, as a measure of entanglement, may reveal the quantum phase transition in this model.
引用
收藏
页码：1677 / 1681
页数：5
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