| 一维伊辛模型中的强关联 |
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| 引用本文： | 滕保华,Sy Hong KOK,陈钢.一维伊辛模型中的强关联[J].四川大学学报(自然科学版),2005,42(2):320-323. |
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| 作者姓名： | 滕保华 Sy Hong KOK 陈钢 |
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| 作者单位： | 新加坡国立大学物理系,新加坡,117542;四川大学物理科学与技术学院,成都,610065;新加坡国立大学物理系,新加坡,117542;四川大学物理科学与技术学院,成都,610065 |
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| 摘 要： | 作者利用格林函数方法较严格地讨论了一维伊辛模型中任意两格点之间的自旋关联，并通过对比昂萨格的二维正方伊辛模型的结果表明，有限温度下一维伊辛模型尽管不存在通常的铁磁到顺磁的自发相变，但是存在零温附近的强自旋关联，从而可加深对一维伊辛模型的认识．
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| 关 键 词： | 伊辛模型 强关联 一维 |
Strong Correlation in 1-d Ising Model |
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| TENG Bao-hua,Sy Hong KOK,CHEN Gang.Strong Correlation in 1-d Ising Model[J].Journal of Sichuan University (Natural Science Edition),2005,42(2):320-323. |
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| Authors: | TENG Bao-hua Sy Hong KOK CHEN Gang |
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| Abstract: | Using the Green function technique, the two-site spin correlations with arbitrary site-distances in the 1-d Ising model are studied exactly, and then compared with Onsagers exact result of the 2-d square Ising model. The result shows that although there does not exist a usual spontaneous transition from ferromagnetic to paramagnetic state at finite temperature, a strong correlation near zero temperature exists. Thus a deep understanding on the 1-d Ising model has been addressed. |
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| Keywords: | Ising model strong correlation one-dimension |
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