A uniqueness theorem in a density-matrix functional theory
强关联电子
2007-05-23 v2 材料科学
摘要
Uniqueness of effective interaction defined in an extension of the Kohn-Sham theory is proved, if the model with a non-degenerate ground state exists and to reproduce a correlation function as well as the single-particle density of an electron system. The two-body interaction term is regarded as a Hubbard-type short range interaction term. The interaction strength is a functional of an element of a two-body reduced density matrix of the electron system. The uniqueness theorem gives a basic principle for effective description of electron systems.
引用
@article{arxiv.cond-mat/0505703,
title = {A uniqueness theorem in a density-matrix functional theory},
author = {Koichi Kusakabe},
journal= {arXiv preprint arXiv:cond-mat/0505703},
year = {2007}
}
备注
5 pages, no figure