A novel coproduct of su(q)(2) and its relation to XXZ spin chain model

Authors
Kwek, LC Oh, CH Singh, K
Citation
Lc. Kwek et al., A novel coproduct of su(q)(2) and its relation to XXZ spin chain model, PHYS LETT A, 279(5-6), 2001, pp. 305-307
Citations number
14
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS A
ISSN journal
03759601 → ACNP
Volume
279
Issue
5-6
Year of publication
2001
Pages
305 - 307
Database
ISI
SICI code
0375-9601(20010205)279:5-6<305:ANCOSA>2.0.ZU;2-L
Abstract
While it is normal to restrict the deformation parameter q in the coproduct of the quantum group su(q) (2) to the positive reals, the naive replacemen t of q by -q results in a coproduct that dues not respect algebra homomorph ism. However, it is possible to define a twisted coproduct in this case tha t respects the algebra homomorphism. Application to XXZ spin chain model is discussed. (C) 2001 Elsevier Science B.V. All rights reserved.