The ground-state energy of the B-B′-U Hubbard model in the static-fluctuation approximation |
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| Authors: | G. I. Mironov |
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| Affiliation: | (1) Mari State Pedagogical Institute, Ioshkar Ola, 424002, Russia |
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| Abstract: | The ground-state energy of the two-sublattice two-dimensional Hubbard model is calculated in the static-fluctuation approximation with allowance for electron transfer from sites to next-to-nearest neighbor sites. In a specific case, the energy of the one-dimensional Hubbard model is calculated and compared with an exact solution. |
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