| 外场中具有长程相互作用S-1/2 XXZ双链的量子相变 |
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| 引用本文： | 李嘉亮,类淑国.外场中具有长程相互作用S-1/2 XXZ双链的量子相变[J].安徽大学学报(自然科学版),2010,34(2). |
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| 作者姓名： | 李嘉亮 类淑国 |
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| 作者单位： | 1. 常熟理工学院,江苏省新型功能材料重点建设实验室,江苏,常熟,215500;常熟理工学院,物理与电子科学系,江苏,常熟,215500
2. 南京工业大学,应用物理系,江苏,南京,210009 |
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| 基金项目： | 江苏省新型功能材料重点建设实验室开放基金资助项目 |
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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.
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| 关 键 词： | XXZ双链 平均场Jordan-Wigner变换 长程相互作用 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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| LI Jia-liang,LEI Shu-guo.Quantum phase transitions of the spin-1/2 XXZ double chain with long-range interactions in the external magnetic field[J].Journal of Anhui University(Natural Sciences),2010,34(2). |
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| Authors: | LI Jia-liang LEI Shu-guo |
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| Abstract: | 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 Helmholtz free energy and magnetization were obtained. The results agreed with that of other literatures. |
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| Keywords: | XXZ double chain mean-field Jordan-Wigner transformation long-range interactions quantum phase transitions |
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