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arXiv · 1412.7511

Modified algebraic Bethe ansatz for XXZ chain on the segment - II - general cases

Samuel Belliard·Rodrigo A. Pimenta
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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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Samuel Belliard, Rodrigo A. Pimenta. 2015-04-02. Modified algebraic Bethe ansatz for XXZ chain on the segment - II - general cases. https://doi.org/10.1016/j.nuclphysb.2015.03.016

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