摘要
运用玻色化方法研究了一维半充满扩展Hubbard模型的相图结果表明,随着相互作用参量的变化,模型存在四个不同的相区,最后具体讨论了模型在各个相区的性质并和他人的结果进行了比较.
The phase diagram of the one-dimensional extended Hubbard model with halffilled-band has been obtained by using the bosonization method. It shows that there exist four different phase regions with the varying of the interactions. The properties of the model in various phase regions are studied in detail and the results are compared with others.
关键词
HUBBARD模型
玻色化
相图
extended Hubbard model bosonization phase diagram