Zero temperature metal-insulator transition in the infinite-dimensional Hubbard model
Strongly Correlated Electrons
2009-10-31 v1
Abstract
The zero temperature transition from a paramagnetic metal to a paramagnetic insulator is investigated in the Dynamical Mean Field Theory for the Hubbard model. The self-energy of the effective impurity Anderson model (on which the Hubbard model is mapped) is calculated using Wilson's Numerical Renormalization Group method. Results for quasiparticle weight, spectral function and self-energy are discussed for Bethe and hypercubic lattice. In both cases, the metal-insulator transition is found to occur via the vanishing of a quasiparticle resonance which appears to be isolated from the Hubbard bands.
Keywords
Cite
@article{arxiv.cond-mat/9902290,
title = {Zero temperature metal-insulator transition in the infinite-dimensional Hubbard model},
author = {R. Bulla},
journal= {arXiv preprint arXiv:cond-mat/9902290},
year = {2009}
}
Comments
4 pages, 3 eps-figures included