HIGH-TEMPERATURE EXPANSION FOR THE SINGLE-BAND HUBBARD-MODEL

被引:35
作者
HENDERSON, JA
OITMAA, J
ASHLEY, MCB
机构
[1] School of Physics, University of New South Wales, Kensington
来源
PHYSICAL REVIEW B | 1992年 / 46卷 / 10期
关键词
D O I
10.1103/PhysRevB.46.6328
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We study the single-band Hubbard model via high-temperature expansions to order (beta-t)9 for the standard two- and three-dimensional lattices. Series are derived for the grand potential and for the ferromagnetic susceptibility, for general values of the Coulomb repulsion parameter U and electron density n. The series are difficult to analyze with any degree of precision, but estimates are obtained for the ferromagnetic critical temperature.
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页码:6328 / 6337
页数:10
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