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arXiv · hep-th/9206001

q--Magnetism at roots of unity

A. Berkovich·G. Sierra·C. Gomez
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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.

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A. Berkovich, G. Sierra, C. Gomez. 1992-06-01. q--Magnetism at roots of unity. https://doi.org/10.1088/0305-4470%2F26%2F2%2F004

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