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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