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Modified algebraic Bethe ansatz for XXZ chain on the segment - II - general cases (1412.7511v2)
Published 23 Dec 2014 in math-ph, cond-mat.stat-mech, hep-th, math.MP, and nlin.SI
Abstract: The spectral problem of the Heisenberg XXZ spin-$\frac{1}{2}$ chain on the segment is investigated within a modified algebraic Bethe ansatz framework. We consider in this work the most general boundaries allowed by integrability. The eigenvalues and the eigenvectors are obtained. They are characterised by a set of Bethe roots with cardinality equal to $N$, the length of the chain, and which satisfies a set of Bethe equations with an additional term.
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