New integrable model of correlated electrons with off-diagonal long-range order from $so(5)$ symmetry

Abstract

We present a new integrable model for correlated electrons which is based on a $so(5)$ symmetry. By using an $\eta$-pairing realization we construct eigenstates of the Hamiltonian with off-diagonal long-range order. It is also shown that these states lie in the ground state sector. We exactly solve the model on a one-dimensional lattice by the Bethe ansatz.

RevTex, 4 pages

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Cited by in corpus (3)

• Interpolation between Hubbard and supersymmetric t-J models. Two-parameter integrable models of correlated electrons
• Results on the symmetries of integrable fermionic models on chains
• Bethe ansatz for the SU(4) extension of the Hubbard Model