PROOF OF ANTIFERROMAGNETISM IN THE HALF-FILLED HUBBARD-MODEL IN INFINITE DIMENSIONS

被引：2

作者：

KOPIETZ, P

机构：

[1] Institut für theoretische Physik der Universität Göttingen, D-3400 Göttingen

来源：

PHYSICA B | 1994年 / 194卷

关键词：

D O I：

10.1016/0921-4526(94)90465-0

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We obtain a rigorous condition for the divergence of the staggered susceptibility of the half filled Hubbard model in infinite dimensions by differentiating the exact functional-integral equation for the local Greens function with respect to a staggered magnetic field. In the weak-coupling regime, we make the reasonable assumption that the high temperature phase without broken symmetry is a Fermi liquid, and proof that the system develops long-range antiferromagnetic order at a finite temperature.

引用

页码：271 / 272

页数：2

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