The role of the central element in the quantum algebra underlying the twisted XXZ chain
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 nontrivial central element t^{Z} in the underlying algebra and its relationship with the twisted boundary conditions, S_{N+1 }^{±} = t^{± N}S_{1}^{±}.
 Publication:

Physics Letters B
 Pub Date:
 February 1995
 DOI:
 10.1016/03702693(95)00684D
 arXiv:
 arXiv:hepth/9504008
 Bibcode:
 1995PhLB..354..389R
 Keywords:

 QUANTUM GROUPS;
 QUANTUM SPIN CHAINS;
 INTEGRABLE MODELS;
 High Energy Physics  Theory;
 Condensed Matter
 EPrint:
 LaTeX file, 15 pages