Series Expansions for Variable Electron Density
强关联电子
2007-05-23 v1
摘要
We have developed a series expansion method for calculating the zero-temperature properties of lattice electron models for variable electron density, i.e. for finite doping away from the half-filled case. This is done by introducing particle fluctuation terms in both the unperturbed Hamiltonian and perturbation. The method is demonstrated by application to the 2-chain ladder, where we provide comparison with previous work as well as obtaining a number of new results.
引用
@article{arxiv.cond-mat/0112371,
title = {Series Expansions for Variable Electron Density},
author = {Zheng Weihong and C. J. Hamer and J. Oitmaa and R. R. P. Singh},
journal= {arXiv preprint arXiv:cond-mat/0112371},
year = {2007}
}
备注
11 figures