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期刊论文

Correlation effects on the energy spectra of quantum dot electrons with harmonic model interactions*

王新强WAN G Xin-qiang

原子与分子物理学报,2000,17(1):7~10,-0001,():

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摘要/描述

The low-lying excitation energy spectra of two, three and five quantum dot electrons with harmonic model interactions in a large magnetic field are calculated by the Hartree-Fock (HF) methods. Correlation effects on the energy level structures are investigated by comparing the HF results with the exact ones. It is found that the pure collective excitations (center-of-mass mode quanta) existing in the exact energy spectra do not appear in the HF energy spectra. The degeneracies of energy levels are also related to the correlation interactions, especially in the energy spectrum of two electrons. In the cases of more than two electrons, as the electron-electron interaction strength is increased the HF energy levels exhibit more complex crossings than the exact ones.

版权说明:以下全部内容由王新强上传于   2009年05月20日 12时28分51秒,版权归本人所有。

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