A类反铁磁模型的共生纠缠度  

Concurrence in A-type Antiferromagnetic Model

作　　者：曹永哲[1] 常平[1] 郭振平[1] 

机构地区：[1]延边大学理学院物理系,吉林延吉133002

出　　处：《延边大学学报（自然科学版）》2007年第3期173-175,共3页Journal of Yanbian University（Natural Science Edition）

摘　　要：通过计算得到共生纠缠度的解析式,并通过图像分析研究了A类反铁磁模型的纠缠程度.发现共生纠缠度C是关于温度T的单调递减函数,随着层间耦合常数Jab和层内耦合常数Jc的增大而增大.在一定温度下,通过控制Jab和Jc可以增大C,并且Jab比Jc对提高纠缠程度影响更大.The concurrence of A-type antiferromagnetic model is analyzed. It is shown that the concurfence is a monotonically decreasing function of the temperature T, and the amount of entanglement increases with the increasing of intraqayer coupling constant Jab and inter-layer coupling constant Jc. We find that the concurrence, at a fixed temperature, can be increased by controlling Jab and Jc. The result also show the Jab has a better action on improving thermal entanglement than Jc.

关 键 词：共生纠缠度 纠缠 A类反铁磁模型 

分 类 号：O469[理学—凝聚态物理]