Random one-body approximation to the Hubbard model. II. One-dimensional case
- 15 October 1978
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 18 (8), 3959-3967
- https://doi.org/10.1103/physrevb.18.3959
Abstract
Our random one-body approximation is applied to the one-dimensional half-filled Hubbard model. New insight is gained regarding the nature of the elementary excitations of the system, especially around the little understood region in the vicinity of the metal-insulator transition. The obtained results are in impressive quantitative agreement with exact many-body results and accurate numerical data.Keywords
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