Equivalence of Gutzwiller and slave-boson mean-field theories for multiband Hubbard models

被引：64

作者：

Buenemann, J. ^{[1
]}

Gebhard, F. ^{[1
]}

机构：

[1] Univ Marburg, Fachbereich Phys, D-35032 Marburg, Germany

来源：

PHYSICAL REVIEW B | 2007年 / 76卷 / 19期

关键词：

FUNCTIONAL-INTEGRAL APPROACH; CORRELATED WAVE-FUNCTIONS; ITINERANT FERROMAGNETS; TRANSITION-METALS; DEGENERATE BANDS; APPROXIMATION; DIMENSIONS; FERMIONS;

D O I：

10.1103/PhysRevB.76.193104

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We demonstrate that a recently introduced slave-boson mean-field theory is equivalent to our Gutzwiller theory for multiband Hubbard models with general onsite interactions. We relate the different objects that appear in both approaches at zero temperature and discuss the limitations of both methods.

引用

页数：4

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