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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