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

Angela Foerster; Arlei Prestes Tonel; Jon Links; Katrina Hibberd

arxiv: cond-mat/0105302 · v1 · submitted 2001-05-15 · ❄️ cond-mat.str-el

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

Arlei Prestes Tonel , Angela Foerster , Katrina Hibberd , Jon Links This is my paper

classification ❄️ cond-mat.str-el

keywords modelsansatzbethefreeintegrableladderparameterspin

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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 analyse the elementary excitations of the models which reveal the existence of a gap for both models that depends on the free parameter.

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

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