WEAK-COUPLING ANALYSIS OF THE OPTICAL CONDUCTIVITY OF THE 2-DIMENSIONAL HUBBARD-MODEL

被引：9

作者：

BRENIG, W

机构：

[1] Institut für Theoretische Physik, Universität zu Köln, Köln 41, W-5000

来源：

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER | 1992年 / 89卷 / 02期

关键词：

D O I：

10.1007/BF01320935

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We analyze the dynamical conductivity at zero momentum transfer of the two dimensional Hubbard model applying a projection technique approach in Liouville space. In the limit of small correlation strength we present a perturbative evaluation of the relevant current selfenergy and the isothermal current susceptibility using a novel real space summation technique. A dicussion of our results for the zero frequency Drude weight, the finite frequency relaxation rate and the incoherent spectrum of the optical conductivity at various filling densities and for zero temperature will be given.

引用

页码：187 / 194

页数：8

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