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- W2949945119 abstract "Two 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." @default.
- W2949945119 created "2019-06-27" @default.
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- W2949945119 date "2000-10-02" @default.
- W2949945119 modified "2023-09-26" @default.
- W2949945119 title "Quantum spin ladder systems associated with su(2|2)" @default.
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