Breakdown of the Luttinger sum rule within the Mott-Hubbard insulator
arXiv:0803.4468 · doi:10.1103/PhysRevB.78.153103
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.
4 pages, 5 figures
References in corpus (6)
- Low-Energy Electronic Structure of the High-Tc Cuprates La2-xSrxCuO4 Studied by Angle-resolved Photoemission Spectroscopy
- Breakdown of Luttinger's theorem in two-orbital Mott insulators
- Luttinger sum rule for finite systems of correlated electrons
- Non-perturbative conserving approximations and Luttinger's sum rule
- Breakdown of the Luttinger sum-rule at the Mott-Hubbard transition in the one-dimensional t1-t2 Hubbard model
- Violation of the Luttinger sum rule within the Hubbard model on a triangular lattice