Violation of the Luttinger sum rule within the Hubbard model on a triangular lattice

被引：0
|
作者：
J. Kokalj
P. Prelovšek
机构：
[1] J. Stefan Institute,Faculty of Mathematics and Physics
[2] University of Ljubljana,undefined
来源：
The European Physical Journal B | 2008年 / 63卷
关键词：
71.10.-w Theories and models of many-electron systems; 71.27.+a Strongly correlated electron systems; heavy fermions; 71.18.+y Fermi surface: calculations and measurements; effective mass, g factor;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The frequency-moment expansion method is developed to analyze the validity of the Luttinger sum rule within the Mott-Hubbard insulator, as represented by the generalized Hubbard model at half filling and large U. For the particular case of the Hubbard model with nearest-neighbor hopping on a triangular lattice lacking the particle-hole symmetry results reveal substantial violation of the sum rule.
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页码：431 / 435
页数：4
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