西南师范大学学报（自然科学版）
西南師範大學學報（自然科學版）
서남사범대학학보（자연과학판）
JOURNAL OF SOUTHWEST CHINA NORMAL UNIVERSITY
2010年
2期
13-16
,共4页
谭德宏%颜华%沈志强%赵萍%王凯俊
譚德宏%顏華%瀋誌彊%趙萍%王凱俊
담덕굉%안화%침지강%조평%왕개준
XXZ模型%热力学纠缠%磁场%临界温度
XXZ模型%熱力學糾纏%磁場%臨界溫度
XXZ모형%열역학규전%자장%림계온도
XXZ model%thermal entanglement%magnetic field%critical temperature
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.
研究瞭變化磁場環境下,海森堡XXZ模型的熱力學糾纏性質.通過計算,得齣熱力學糾纏度解析錶達式,由模擬錶明,繫統糾纏度對變化的磁場、各嚮異性參數、溫度錶現齣不同的行為.為提高繫統臨界溫度,給齣瞭磁場彊度範圍和各嚮異性參數條件.
연구료변화자장배경하,해삼보XXZ모형적열역학규전성질.통과계산,득출열역학규전도해석표체식,유모의표명,계통규전도대변화적자장、각향이성삼수、온도표현출불동적행위.위제고계통림계온도,급출료자장강도범위화각향이성삼수조건.
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 by 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.
