q--Magnetism at roots of unity

@inproceedings{Berkovich1992qMagnetismAR,
  title={q--Magnetism at roots of unity},
  author={Alexander Berkovich and Germ{\'a}n Sierra and C{\'e}sar G{\'o}mez},
  year={1992}
}
We study the thermodynamic properties of a family of integrable 1D spin chain hamilto-nians 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… Expand
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