14 citations · 51 across the 5 of their papers we have counts for
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Exact Plaquette-Ordered Ground States in the Generalized Hubbard Model in Arbitrary Dimensions
Masaaki Nakamura, Kazuhito Itoh
We show the existance of the exact plaquette-ordered ground states of the Hubbard model including site-off-diagonal interactions in arbitrary dimensions, by decomposing the Hamilto…
Exact Bond-Located Spin Ground State in the Hubbard Chain with Off-Diagonal Coulomb Interactions
Kazuhito Itoh, Masaaki Nakamura, Norihiro Muramoto
We show the existence of an exact ground state in certain parameter regimes of one-dimensional half-filled extended Hubbard model with site-off-diagonal interactions. In this groun…
Role of Bond-Bond Interaction in the Extended Hubbard Chain
Masaaki Nakamura, Kazuhito Itoh, Norihiro Muramoto
Phase diagrams of the one-dimensional extended Hubbard model with a nearest neighbor interaction and site-off-diagonal (bond-charge and bond-bond ) interactions at half-…
Exact Ground States in Spin Systems with Orbital Degeneracy
Kazuhito Itoh
We present exact ground states in spin models with orbital generacy in one and higher dimensions. A method to obtain the exact ground states of the models when the Hamiltonians are…