THE BREAKDOWN OF FERMI-LIQUID THEORY IN THE HUBBARD-MODEL

被引：41

作者：

EDWARDS, DM ^{[1
]}

HERTZ, JA ^{[1
]}

机构：

[1] NORDITA,DK-2100 COPENHAGEN,DENMARK

来源：

PHYSICA B | 1990年 / 163卷 / 1-3期

关键词：

D O I：

10.1016/0921-4526(90)90259-W

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A modified Hubbard alloy analogy leads to an equation for the proper self-energy of the Hubbard model at T = 0 which yields exact results in certain limits and has a series solution in powers of the interaction U satisfying Luttinger's requirements. However, Fermi liquid behaviour breaks down in a region of the phase diagram where the series diverges, although it persists for all U at sufficiently low electron density. © 1990.

引用

页码：527 / 529

页数：3