qmagnetism at roots of unity
Abstract
We study the thermodynamic properties of a family of integrable 1D spin chain hamiltonians associated with quantum groups at roots of unity. These hamiltonians depend for each primitive root of unit on a parameter $s$ which plays the role of a continuous spin. The model exhibits ferrimagnetism even though the interaction involved is between nearest neighbors. The latter phenomenon is interpreted as a genuine quantum group effect with no ``classical" analog. The discussion of conformal properties is given.
 Publication:

Journal of Physics A Mathematical General
 Pub Date:
 January 1993
 DOI:
 10.1088/03054470/26/2/004
 arXiv:
 arXiv:hepth/9206001
 Bibcode:
 1993JPhA...26L..45B
 Keywords:

 High Energy Physics  Theory
 EPrint:
 7 pages, LaTeX file, IMFF6/92