| 自旋相干态法解Dicke模型的基态解析解 |
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| 引用本文： | 赵秀琴.自旋相干态法解Dicke模型的基态解析解[J].太原师范学院学报(自然科学版),2014(3):74-78. |
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| 作者姓名： | 赵秀琴 |
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| 作者单位： | 太原师范学院物理系 |
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| 摘 要： | 文章采用了自旋相干态的三种表达方式,利用了变分原理,求解了Dicke模型的相变点和基态能量解析表达式,这三种方法所得的结论与Holstein-Primakoff(HP)变换方法所得结论完全一致,而这三种方法有一定的普适性和优越性.
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| 关 键 词： | Dicke模型 自旋相干态 量子相变点 基态能量解 |
Spin Coherent-State Method and Analytical Solutions of Ground-State for Dicke Model |
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| Zhao Xiuqin.Spin Coherent-State Method and Analytical Solutions of Ground-State for Dicke Model[J].Journal of Taiyuan Normal University:Natural Science Edition,2014(3):74-78. |
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| Authors: | Zhao Xiuqin |
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| Institution: | Zhao Xiuqin;Department of physics Taiyuan Normal University; |
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| Abstract: | Spin coherent states three methods are adopted in this paper, the use of varia- tional principle, has solved the analytical expression of the phase transition point and the ground state energy of Dicke model. The results of the three ways of income in full accord the conclusion of Holstein-Primakoff （HP） transform method, but these three methods is simple. |
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| Keywords: | dicke model spin coherent state method quantum phase transition point the ground state energy |
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