1993/12/05 by Qimiao Si, M. J. Rozenberg, Gabriel Kotliar +3 · 5 citations
Physics and Astronomy · #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Theoretical and Computational Physics #cond-mat
paper · pdf · doi:10.1103/physrevlett.72.2761
12 pages, REVTEX
arxiv created 1993/12/05 · openalex publication_date 1994/04/25 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
We study a spinless two-band model at half-filling in the limit of infinite dimensions. The ground state of this model in the noninteracting limit is a band insulator. We identify transitions to a metal and to a charge Mott insulator, using a combination of analytical, quantum Monte Carlo, and zero temperature recursion methods. The metallic phase is a non-Fermi-liquid state with algebraic local correlation functions with universal exponents over a range of parameters.