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Hubbard model with next-nearest-neighbour interaction terms in higher dimensions: new, exactly solvable cases

机译:具有较高维度的近邻互动项的哈伯德模型:新的,完全可解决的案例

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摘要

The exact ground-state wavefunction and energy of an extended Hubbard model are presented containing also next-nearest-neighbour hopping, bond-charge and density interaction terms besides the nearest-neighbour and on-site contributions. Our results are valid at half-filling fbr a wide range of parameters, on simple hypercubic lattices in arbitrary D > 1 dimensions.
机译:提出了扩展的Hubbard模型的精确基态波函数和能量,除了最近邻和现场贡献之外,还包含了最近邻跳跃,键电荷和密度相互作用项。在任意D> 1维的简单超三次晶格上,对各种参数进行半填充时,我们的结果都是有效的。

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