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外场中具有长程相互作用S-1/2 XXZ双链的量子相变

Quantum phase transitions of the spin-1/2 XXZ double chain with long-range interactions in the external magnetic field
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摘要 采用平均场Jordan-Wigner变换分析方法,研究外场中且具有Z方向均匀长程相互作用自旋-1/2XXZ双链的量子相变,得到了系统格点的亥姆赫兹自由能、格点磁化强度等热力学量的解析表达式及其数值解.数值结果与其他文献的结果相符. Using the mean-field Jordan-Wigner transformation analysis, the authors studied the quantum phase transitions of the one-dimensional spin-1/2 XXZ double chain with Z-directional uniform long - range interactions in the external magnetic field. Analytical formulas and numerical solutions of the Helmhohz free energy and magnetization were obtained. The results agreed with that of other literatures.
出处 《安徽大学学报(自然科学版)》 CAS 北大核心 2010年第2期49-52,共4页 Journal of Anhui University(Natural Science Edition)
基金 江苏省新型功能材料重点建设实验室开放基金资助项目(06KFJJ004)
关键词 XXZ双链 平均场Jordan—Wigner变换 长程相互作用 量子相变 XXZ double chain mean-field Jordan-Wigner transformation long-range interactions quantum phase transitions
作者简介 李嘉亮(1957-),男,江苏常熟人,常熟理工学院副教授.
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参考文献13

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