DIAGRAM TECHNIQUE FOR THE HUBBARD-MODEL .2. METAL-INSULATOR-TRANSITION

被引：52

作者：

VAKARU, SI

VLADIMIR, MI

MOSKALENKO, VA

机构：

来源：

THEORETICAL AND MATHEMATICAL PHYSICS | 1990年 / 85卷 / 02期

关键词：

D O I：

10.1007/BF01086848

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

An approximate Dyson equation is formulated for the correlation Green's function and the free-energy diagrams corresponding to this approximation are summed. The basic equations that determine the Mott metal-insulator transition are established. The critical value of the Coulomb interaction is U(C) = W/2, where W is the width of the band.

引用

页码：1185 / 1192

页数：8

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[4]

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