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- W2017682389 abstract "The real-space renormalization-group technique is applied to the Hubbard model on a linear chain with a half-filled band; a recently proposed modified scheme is used for the renormalization of the parameters. The result for the ground-state energy is quite improved with respect to the earlier results of the existing scheme. Both the energy and its derivative with respect to the on-site repulsion term agree reasonably well with the exact solution. However, it is indicated that the calculation of the correlation function and energy gap requires further refinement of this scheme." @default.
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- W2017682389 title "Real-space renormalization-group study of the Hubbard model: A modified scheme" @default.
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- W2017682389 doi "https://doi.org/10.1103/physrevb.57.11831" @default.
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