Entanglement in spin-1 Heisenberg XY chain

被引：0
|
作者：
QIN Meng1
2 Xi’an Institute of Post and Telecommunications
机构：
来源：
Science China(Physics,Mechanics & Astronomy) | 2008年 / 07期
关键词：
Heisenberg chain; bipartite entanglement; negativity;
D O I：
暂无
中图分类号：
O413 [量子论];
学科分类号：
070201 ;
摘要：
We investigated the quantum entanglement in spin-1 Heisenberg XY chain for two-spin-qutrit and multi-particle systems. As a measure of the entanglement, the negativity of this state was analyzed as a function of the temperature and the magnetic field. We gave some numerical results and discussed them in detail. We found that the negativity increases monotonously with the coupling constants |J1| and |J2|, and it showed a symmetry with respect to the point of J1=0 and J2=0. In addition to the above features, there is evidence that the critical temperature is independent of the length of the chain.
引用
收藏
页码：817 / 822
页数：6
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