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首页> 外文期刊>Physica status solidi, B. Basic research >Quantum theory of symmetric screening in the Hartree approximation
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Quantum theory of symmetric screening in the Hartree approximation

机译：Hartree逼近中的对称筛选的量子理论

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Quantum theory of screening by the electron gas is formulated in the Hartree approximation. The energy of interaction between two charges is calculated taking into account interaction between bare charges, interaction between the charges and the gas, interaction between the electrons in the gas, and finally the kinetic energy of the electron gas in the charges' field. It is assumed that both charges are screened symmetrically, the notion of a test charge is not employed. Our self-consistent linear screening theory accounts for all second order corrections in the perturbing potentials. We get the known result that the interaction energy is obtained by multiplying the screened potential of the first charge by the bare second charge. However, our result comes about from a partial cancellation between the kinetic and potential parts of the interaction energy in the rigorously symmetric screening, whereas in the standard derivations it results from the asymmetric screening picture with the use of a test charge. The calculated structure of kinetic and potential parts of the interaction energy is discussed. (c) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
机译：在Hartree近似中建立了电子气屏蔽的量子理论。计算两个电荷之间的相互作用能时要考虑到裸电荷之间的相互作用，电荷与气体之间的相互作用，气体中电子之间的相互作用以及最终在电荷场中电子气的动能。假定两个电荷被对称地屏蔽，则不采用测试电荷的概念。我们的自洽线性筛选理论考虑了扰动电位中的所有二阶校正。我们得到的已知结果是，相互作用能量是通过将第一电荷的屏蔽电位乘以裸露的第二电荷而获得的。但是，我们的结果来自严格对称筛选中相互作用能的动能和势能部分之间的部分抵消，而在标准派生中，它是由使用测试电荷的非对称筛选图片产生的。讨论了相互作用能的动力学和势能部分的计算结构。 （c）2006年WILEY-VCH Verlag GmbH＆Co. KGaA，魏因海姆。

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