| 修正库仑势为1/rp情况下的二维电子气基态能 |
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| 引用本文： | 傅梁杰,陈渊. 修正库仑势为1/rp情况下的二维电子气基态能[J]. 广州大学学报(自然科学版), 2009, 8(5) |
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| 作者姓名： | 傅梁杰 陈渊 |
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| 作者单位： | 广州大学物理与电子工程学院,广东,广州,510006;广州大学物理与电子工程学院,广东,广州,510006 |
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| 摘 要： | 根据空穴的正电荷屏蔽效应,库仑势1/r修正为1/rp.利用量子多体微扰理论的方法,取得二维电子气基态能的简单解析表达式,得到了基态能E和平衡半径rep,与作用参数p的依赖关系.在低密度情况下,得到的结果与数值模拟、半解析方法给出的结果一致.
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| 关 键 词： | 基态能 电子气 修正库仑势 |
The ground-state energy of the electron gas with the modified Coulomb potential 1/rp in two dimensions |
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| FU Liang-jie,CHEN Yuan. The ground-state energy of the electron gas with the modified Coulomb potential 1/rp in two dimensions[J]. Journal og Guangzhou University:Natural Science Edition, 2009, 8(5) |
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| Authors: | FU Liang-jie CHEN Yuan |
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| Abstract: | In this paper,due to the effect of positively-charged screening holes,the Coulomb potential energy 1/r is modified to be 1/rp.Using many-body quantum perturbation theory,we obtain a simple analytic representation of the ground state energy for a two-dimensional electron gas.It is found that the ground-state energy E and equilibrium radius rsep are dependent on the interaction parameter p.Our results agree with those obtained by the numerical simulations and semi-analytic methods at low density limit. |
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| Keywords: | ground-state energy electron gas modified Coulomb potential |
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