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The Quantum Algebraic Structure of the Twisted XXZ Chain

M. R-Monteiro, I. Roditi, L. M. C. S. Rodrigues, S. Sciuto

hep-tharXiv:hep-th/9410144

Abstract

We consider the Quantum Inverse Scattering Method with a new R-matrix depending on two parameters q and t. We find that the underlying algebraic structure is the two-parameter deformed algebra SUq,t(2) enlarged by introducing an element belonging to the centre. The corresponding Hamiltonian describes the spin-1/2 XXZ model with twisted periodic boundary conditions.

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