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The Role of the Central Element in the Quantum Algebra Underlying the Twisted XXZ Chain

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

We study the relationship among the XXZ Heisenberg model and three models obtained from it by various transformations. In particular, we emphasize the role of a non trivial central element $t^Z$ in the underlying algebra and its relationship with the twisted boundary conditions, $S^{\pm}_{N+1}=t^{\pm N}S^{\pm}_1$.

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M. R-Monteiro, I. Roditi, L. M. C. S. Rodrigues, S. Sciuto. 1995-04-04. The Role of the Central Element in the Quantum Algebra Underlying the Twisted XXZ Chain. https://doi.org/10.1016/0370-2693(95)00684-d

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