Metal-insulator transition in 1D Hubbard model

Journal Article · Mon Apr 25 04:00:00 EDT 1994 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.72.2765· OSTI ID:7279929

Gulacsi, M; Bedell, K S ^[1]

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1. Theoretical Division, Los Alamos National Laboratory, MS-B262, Los Alamos, New Mexico 87545 (United States)

For the one-dimensional Hubbard model we extended the bosonization technique, away from half-filling, in such a way that a general formula is obtained for the zero temperature single-particle Green function with validity over the whole doping range. Our method allows us to calculate, for the first time, the one-body Green function in both Tomonaga-Luttinger and Luther-Emery universality classes, to characterize the crossover between these two behaviors and thus, to describe the metal-insulator transition. We have found that the transition can be characterized as a Brinkman-Rice transition with a diverging effective mass.

• OSTI ID: 7279929
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 72:17; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

665411* -- Basic Superconductivity Studies-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRYSTAL MODELS
ELECTRONIC STRUCTURE
ENERGY SPECTRA
FUNCTIONS
GREEN FUNCTION
HIGH-TC SUPERCONDUCTORS
HUBBARD MODEL
MATHEMATICAL MODELS
ONE-DIMENSIONAL CALCULATIONS
SPECTRA
SUPERCONDUCTORS