Absence of metal–insulator transition in Hubbard’s model for a hypercubic lattice
A. L. AlistratovPhysicotechnical Institute, Ukrainian Academy of Sciences, DonetskYu. A. DimashkoPhysicotechnical Institute, Ukrainian Academy of Sciences, DonetskV. S. Podol’skiiPhysicotechnical Institute, Ukrainian Academy of Sciences, Donetsk
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Hubbard’s model with local repulsion and half-filled band is considered for a hypercubic lattice. It is shown that there is no metal–insulator transition in this model and its ground state is an antiferromagnetic insulator for any finite interaction.
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