Ordering of energy levels for extended  Hubbard chain.

Hakobyan, Tigran

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The Hamiltonian for an extended Hubbard model with phonons as introduced by A. Montorsi and M. Rasetti is considered on a D-dimensional lattice. The symmetries of the model are studied in various cases. It is shown that for a certain choice of the parameters a superconducting $S U_{q} (2)$ holds as a true quantum symmetry, but only for D=1.

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Displaying similar documents to “Ordering of energy levels for extended S U ( N ) Hubbard chain.”

Displaying similar documents to “Ordering of energy levels for extended $S U (N)$ Hubbard chain.”