| 热平衡态的实时微扰理论——电子声子相互作用系统 |
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| 引用本文： | 徐宏华. 热平衡态的实时微扰理论——电子声子相互作用系统[J]. 上海交通大学学报, 1986, 0(6) |
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| 作者姓名： | 徐宏华 |
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| 作者单位： | 普陀区业余大学 |
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| 摘 要： | 本文给出了建立在时间闭路上的wick定理,以及相应的Dyson方程,就电子声子系统得到了这种实时微扰的图形规则,计算了电子的自能,结果与用温度格林函数方法算得的一致,并与热场动力学(Thermo Field Dynamics)方法进行了比较.
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| 关 键 词： | 闭路格林函数 实时温度微扰 时间闭路上的Wick定理 |
Real Time Perturbation Theory for Theormal Equilibrium States. Electronphonon System |
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| Xu Honghua. Real Time Perturbation Theory for Theormal Equilibrium States. Electronphonon System[J]. Journal of Shanghai Jiaotong University, 1986, 0(6) |
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| Authors: | Xu Honghua |
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| Abstract: | A generalized Wick theorem and its corresponding Dyson equation are established on the closed time path. The corresponding diagramatic rules of perturbation expansion are formulated for the electronphonon system. The electron self-energy is evaluated and the results coincide with those derived by the method of temperature Green functions. They have also been compared with the results of thermo field dynamics. |
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| Keywords: | closed time path Green function real time temperature perturbation closed time path Wick theorem |
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