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arXiv · 0711.0716

Generic boundary scattering in the open XXZ chain

Anastasia Doikou
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Abstract

The open critical XXZ spin chain with a general right boundary and a trivial diagonal left boundary is considered. Within this framework we propose a simple computation of the exact generic boundary S-matrix (with diagonal and non-diagonal entries), starting from the `bare' Bethe ansatz equations. Our results coincide with the ones obtained by Ghoshal and Zamolodchikov, after assuming suitable identifications of the bulk and boundary parameters.

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Anastasia Doikou. 2008-03-31. Generic boundary scattering in the open XXZ chain. https://doi.org/10.1016/j.physleta.2008.03.056

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