The Role of the Central Element in the Quantum Algebra Underlying the Twisted XXZ Chain
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چکیده
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 in the underlying algebra and its relationship with the twisted boundary conditions, S N+1 = t S 1 . Key-words: Quantum Groups; Quantum Spin Chains; Integrable Models.
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تاریخ انتشار 1995