Breakdown of the Luttinger sum rule within the Mott-Hubbard insulator
Strongly Correlated Electrons
2008-10-10 v2
Abstract
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 regime of large gap at V >> t, while the sum rule appears to recover together with vanishing of the Mott-Hubbard gap.
Keywords
Cite
@article{arxiv.0803.4468,
title = {Breakdown of the Luttinger sum rule within the Mott-Hubbard insulator},
author = {J. Kokalj and P. Prelovsek},
journal= {arXiv preprint arXiv:0803.4468},
year = {2008}
}
Comments
4 pages, 5 figures