| 量子海森堡自旋玻璃的Almeida-Thouless不稳定性 |
| |
| 引用本文： | 易林,姚凯伦. 量子海森堡自旋玻璃的Almeida-Thouless不稳定性[J]. 华中科技大学学报(自然科学版), 1993, 0(3) |
| |
| 作者姓名： | 易林 姚凯伦 |
| |
| 作者单位： | 华中理工大学物理系(易林)，华中理工大学物理系(姚凯伦) |
| |
| 基金项目： | 国家自然科学基金，华中理工大学青年基金资助项目 |
| |
| 摘 要： | 分析了量子海森堡自旋玻璃稳态Replica对称解的稳定性,获得了著名的Almeida-Thouless(AT)和Gabay-Toulouse(GT)相变条件,通过数值计算得到了不同自旋值的AT临界相图,并讨论了与其它理论的关联.
|
| 关 键 词： | 量子理论 自旋玻璃 数值计算 稳定性 |
Almeida-Thouless (AT) Instability in Quantum Heisenberg Spin Glass |
| |
| Yi Lin Yao Kailun. Almeida-Thouless (AT) Instability in Quantum Heisenberg Spin Glass[J]. JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE, 1993, 0(3) |
| |
| Authors: | Yi Lin Yao Kailun |
| |
| Affiliation: | Yi Lin Yao Kailun |
| |
| Abstract: | Instability of the static replica symmetry solution in quantum Heisenberg spin glass are analyzed and the marginal instability conditions for the Almeida-Touless (AT) and Gabay-Toulouse (GT) are obtained. In particular, the AT-instability phase diagram is studied numerically for different spin quantum numbers S=1/2,1,3/2,2 and 5/2. AT-anomalous behavior with different spin quantum numbers is found using the approximation of a slowly varying function. Some relations associated with other methods are discussed. |
| |
| Keywords: | quantum theory spin glass numerical calculation stability |
| 本文献已被 CNKI 等数据库收录！ |
