Quantum spin ladder systems associated with su(2|2)

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dc.creatorFoerster, A.
dc.creatorHibberd, K. E.
dc.creatorLinks, J. R.
dc.creatorRoditi, I.
dc.date2000-10-02
dc.date.accessioned2026-07-07T02:38:54Z
dc.date.available2026-07-07T02:38:54Z
dc.descriptionTwo integrable quantum spin ladder systems will be introduced associated with the fundamental su(2|2) solution of the Yang-Baxter equation. The first model is a generalized quantum Ising system with Ising rung interactions. In the second model the addition of extra interactions allows us to impose Heisenberg rung interactions without violating integrability. The existence of a Bethe ansatz solution for both models allows us to investigate the elementary excitations for antiferromagnetic rung couplings. We find that the first model does not show a gap whilst in the second case there is a gap for all positive values of the rung coupling.
dc.description5 pages
dc.identifierhttps://arxiv.org/abs/cond-mat/0010035
dc.identifierhttp://arxiv.org/abs/cond-mat/0010035
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/16859
dc.subjectStrongly Correlated Electrons
dc.titleQuantum spin ladder systems associated with su(2|2)
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