Integrable generalized spin ladder models based on the SU(1|3) and SU(3|1) algebras

We present two integrable spin ladder models which possess a general free parameter besides the rung coupling J. The models are exactly solvable by means of the Bethe ansatz method and we present the Bethe ansatz equations. We analyze the elementary excitations of the models which reveal the existen...

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Bibliographic Details
Published in:Journal of mathematical physics 2003-12, Vol.44 (12), p.6032-6039
Main Authors: Tonel, Arlei Prestes, Foerster, Angela, Hibberd, Katrina, Links, Jon
Format: Article
Language:English
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Summary:We present two integrable spin ladder models which possess a general free parameter besides the rung coupling J. The models are exactly solvable by means of the Bethe ansatz method and we present the Bethe ansatz equations. We analyze the elementary excitations of the models which reveal the existence of a gap for both models that depends on the free parameter.
ISSN:0022-2488
1089-7658
DOI:10.1063/1.1627973