| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
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|
|---|---|---|
| Page(s) | C8-1413 - C8-1414 | |
| DOI | https://doi.org/10.1051/jphyscol:19888649 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-1413-C8-1414
DOI: 10.1051/jphyscol:19888649
Mathematics Department, UMIST, PO Box 88, Sackville St, Manchester M60 1QD, G.B.
J. Phys. Colloques 49 (1988) C8-1413-C8-1414
DOI: 10.1051/jphyscol:19888649
THE S = 1 QUANTUM SPIN CHAIN WITH PURE BIQUADRATIC EXCHANGE
J. B. ParkinsonMathematics Department, UMIST, PO Box 88, Sackville St, Manchester M60 1QD, G.B.
Abstract
The S = 1 quantum spin chain with pure biquadratic exchange has 2-strings that behave in the same way as 1-strings (magnons) in other chains. An exact partial mapping exists from this system to an integrable S = 1/2 XXZ system. The ground state is not included in the mapping for finite N, but appears to be the same in the thermodynamic limit. The elementary excitations may also be deduced.