节点文献
具有三自旋相互作用的横场中各向异性XY模型的协作参量
Concurrence of Anisotropic XY Chains With Three-Site Interactions
【摘要】 讨论了具有三自旋相互作用的横场中各向异性XY模型的量子相变和量子纠缠.数值研究了协作参量在相变点附近的行为.发现协作参量可以很好地体现系统的量子相变.
【Abstract】 Quantum phase transitions and quantum entanglement of anisotropic XY chains with the XZY-YZX type of three-site interaction are discussed.The behaviors of concurrence near the critical points is studied numerically.It is found that the behaviors of concurrence can furnish a dramatic signature of the quantum critical point.
【关键词】 横场中各向异性XY模型;
三自旋相互作用;
量子相变;
量子纠缠;
协作参量;
【Key words】 anisotropic XY chains; three-site interactions; quantum phase transition; quantum entanglement; concurrence;
【Key words】 anisotropic XY chains; three-site interactions; quantum phase transition; quantum entanglement; concurrence;
【基金】 江苏省普通高校自然科学研究资助项目(12KJB140008)
- 【文献出处】 南京师大学报(自然科学版) ,Journal of Nanjing Normal University(Natural Science Edition) , 编辑部邮箱 ,2012年04期
- 【分类号】O431.2
- 【下载频次】43