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- W2997333618 abstract "We have calculated the charge gap and spin gap for the two-chain Hubbard model as a function of the on-site Coulomb interaction and the interchain hopping amplitude. We used the density matrix renormalization group method and developed a method to calculate separately the gaps numerically for the symmetric and antisymmetric modes with respect to the exchange of the chain indices. We have found very different behaviors for the weak and strong interaction cases. Our calculated phase diagram is compared to the one obtained by Balents and Fisher using the weak coupling renormalization group technique." @default.
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- W2997333618 date "1998-03-01" @default.
- W2997333618 modified "2023-09-24" @default.
- W2997333618 title "Phase diagram of the two-chain Hubbard model" @default.
- W2997333618 hasPublicationYear "1998" @default.
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