Natural orbital functional theory and pairing correlation effects in electron momentum density

被引：0

作者：

Barbiellini, B. ^{[1
]}

机构：

[1] Department of Physics, Northeastern University, Boston MA 02115, United States

来源：

Fizika Nizkikh Temperatur | 2014年 / 40卷 / 04期

关键词：

Electrons;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Occupation numbers of natural orbitals capture the physics of strong electron correlations in momentum space. A natural orbital density functional theory based on the antisymmetrized geminal product provides these occupation numbers and the corresponding electron momentum density. A practical implementation of this theo-ry approximates the natural orbitals by the Kohn-Sham orbitals and uses a mean-field approach to estimate pair-ing amplitudes leading to corrections for the independent particle model. The method is applied to weakly doped La2CuO4.

引用

页码：414 / 419

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