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Metal-Insulator transition in the Generalized Hubbard model

Anatoly A. Ovchinnikov
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Abstract

We present the exact ground-state wave function and energy of the generalized Hubbard model, subjected to the condition that the number of double occupied sites is conserved, for a wide, physically relevant range of parameters. For one hole and one double occupied site the existence of the ferromagnetic ground-state is proved which allow one to determine the critical value of the on-site repulsion corresponding to the point of metal-insulator transition. For the one dimensional model the exact solution for special values of the parameters is obtained.

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Anatoly A. Ovchinnikov. 1994-12-25. Metal-Insulator transition in the Generalized Hubbard model. https://doi.org/10.1088/0953-8984%2F6%2F50%2F015

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