Zero temperature metal-insulator transition in the infinite-dimensional Hubbard model

Preprint

21 February 1999

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/9902290

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

METAL INSULATOR TRANSITION
FUNCTION AND SELF ENERGY
TEMPERATURE METAL
ZERO TEMPERATURE
HUBBARD MODEL
PARAMAGNETIC

All Related Versions

Version 1, 1999-02-21, ArXiv
Published version: Physical Review Letters, 83 (1), 136.

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