New Iterative Perturbation Scheme for Lattice Models with Arbitrary Filling
- 1 July 1996
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 77 (1) , 131-134
- https://doi.org/10.1103/physrevlett.77.131
Abstract
We derive a new perturbation scheme for treating the large limit of lattice models at arbitrary filling. The results are compared with exact diagonalization data for the Hubbard model and found to be in good agreement.
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