Breakdown of the Luttinger sum rule within the Mott-Hubbard insulator

被引：7
|
作者：
Kokalj, J. [1 ]
Prelovsek, P. [1 ,2 ]
机构：
[1] Jozef Stefan Inst, SI-1000 Ljubljana, Slovenia
[2] Univ Ljubljana, Fac Math & Phys, SI-1000 Ljubljana, Slovenia
来源：
PHYSICAL REVIEW B | 2008年 / 78卷 / 15期
关键词：
D O I：
10.1103/PhysRevB.78.153103
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The validity of the Luttinger sum rule is investigated within the prototype tight-binding model of interacting fermions in one dimension, i.e., the t-V model including the next-nearest-neighbor hopping t('), in order to break the particle-hole symmetry. Scaling analysis of finite-system results at half filling reveals evident breakdown of the sum rule in the large gap regime at V > t while the sum rule appears to recover together with vanishing of the Mott-Hubbard gap.
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页数：4
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