Many-body theory of degenerate systems: A simple example
强关联电子
2007-05-23 v1
摘要
The hierarchy of Green functions for (quasi)degenerate systems, presented in cond-mat/0308058, is calculated in detail for the case of a system with closed shells plus a single electron in a two-fold degenerate level. The complete hierarchy is derived explicitly, in terms of Green functions and of Feynman diagrams.
引用
@article{arxiv.cond-mat/0312158,
title = {Many-body theory of degenerate systems: A simple example},
author = {Christian Brouder},
journal= {arXiv preprint arXiv:cond-mat/0312158},
year = {2007}
}
备注
9 pages, 1 figure