ON THE EXISTENCE OF SUPERCONDUCTIVITY IN THE HUBBARD-MODEL

被引：26

作者：

BOGOLYUBOV, NN ^{[1
]}

MOSKALENKO, VA ^{[1
]}

机构：

[1] ACAD SCI MOSSR,INST APPL PHYS,KISHINEV,MOLDAVIA,USSR

来源：

THEORETICAL AND MATHEMATICAL PHYSICS | 1991年 / 86卷 / 01期

关键词：

D O I：

10.1007/BF01018492

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A generalized Wick theorem is proposed for the superconducting phase of the single-band Hubbard model, and a thermodynamic diagram technique taking into account the strong electron correlations of the system is developed. An exact Dyson equation is obtained for the single-particle Green's function and an approximate equation for the correlation two-particle Green's function. On this basis, a dynamical system of equations that determines the superconducting phase of the Hubbard model is formulated.

引用

页码：10 / 19

页数：10

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