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Ground state energy and mass gap of a generalised quantum spin ladder

M. T. Batchelor·M. Maslen
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Abstract

We show that a 2-leg ladder hamiltonian introduced recently by Albeverio and Fei (cond-mat/9807341) can be made to satisfy the Hecke algebra. As a result we have found an equivalent representation of the eigenspectrum in terms of the spin-1/2 antiferromagnetic XXZ chain at $Δ= - 5/3$. The values of thermodynamic quantities such as the ground state energy and mass gap follow from the known XXZ results.

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M. T. Batchelor, M. Maslen. 1999-07-30. Ground state energy and mass gap of a generalised quantum spin ladder. https://doi.org/10.1088/0305-4470%2F33%2F3%2F301

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