变化磁场环境下海森堡XXZ模型的热力学纠缠  

Thermal Entanglement of Heisenberg XXZ Model under the Variety Magnetic Field Environment

作　　者：谭德宏[1] 颜华[1] 沈志强[1] 赵萍[1] 王凯俊[1] 

机构地区：[1]解放军后勤工程学院基础部物理教研室,重庆401311

出　　处：《西南师范大学学报（自然科学版）》2010年第2期13-16,共4页Journal of Southwest China Normal University(Natural Science Edition)

基　　金：解放军后勤工程学院青年科研基金资助计划(YQ08-41104)

摘　　要：研究了变化磁场环境下,海森堡XXZ模型的热力学纠缠性质.通过计算,得出热力学纠缠度解析表达式,由模拟表明,系统纠缠度对变化的磁场、各向异性参数、温度表现出不同的行为.为提高系统临界温度,给出了磁场强度范围和各向异性参数条件.The entanglement property of Heisenberg XXZ model which under the variety magnetic field environment is investigated. By numerical calculation, the authors derive the analytical express of thermal concurrence. And hy simulation, the result of it shows that the thermal entanglement of system is sensitive to the variety of external magnetic, the variety of anisotropy parameter and the temperature. To raise the critical temperature of system, some conditions about the range of external magnetic field and the variety of anisotropy have been provided.

关 键 词：XXZ模型 热力学纠缠 磁场 临界温度 

分 类 号：O431[机械工程—光学工程]