Exact solution of the Zn+1 × Zn+1 symmetric generalization of the XXZ model |
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Authors: | O Babelon HJ de Vega C-M Viallet |
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Abstract: | We give a generalization of the XXZ model where the spin takes n + 1 values, and the hamiltonian is not parity invariant. The diagonalization problem is solved exactly by the use of the n nested Bethe ansatz. We compute the ground-state energy in both the ferromagnetic and the antiferromagnetic case. |
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