On the NLIE of (inhomogeneous) open spin-1 XXZ chain with general integrable boundary terms
arXiv:1012.1055 · doi:10.1007/JHEP02(2011)016
Abstract
Starting from the T-Q equations of the open spin-1 XXZ quantum spin chain with general integrable boundary terms, for values of the boundary parameters which satisfy a certain constraint, we derive a set of nonlinear integral equations (NLIEs) for the inhomogeneous open spin-1 XXZ chain. By taking the continuum limit of these NLIEs, and working in analogy with the open spin-1 XXZ chain with diagonal boundary terms, we compute the boundary and the Casimir energies of the corresponding supersymmetric sine-Gordon (SSG) model. We also present an analytical result for the effective central charge in the ultraviolet (UV) limit.
arXiv comment21 pages; v2: small changes in notations
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