Integrable su(2)-invariant spin chains and the Haldane conjecture

C.M. Yung; M.T. Batchelor

Integrable su(2)-invariant spin chains and the Haldane conjecture

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arxiv cond-mat/9406072 v1 pith:UBY4RHAX submitted 1994-06-17 cond-mat

Integrable su(2)-invariant spin chains and the Haldane conjecture

M.T. Batchelor , C.M. Yung This is my paper

classification cond-mat

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We perform a systematic exact algebraic search for integrable spin-S chains which are isotropic in spin space, i.e. are su(2)-invariant. The families of spin chains found for S < 14 support recent arguments in favour of the complete classification of all such integrable chains. The integrable families of spin chains are discussed in the light of the conjectured spin-dependent properties of the Heisenberg chain.

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