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arXiv:hep-th/9903066 · Journal of Physics A Mathematical and General

Direct calculation of breatherSmatrices

Anastasia Doikou, Rafael I Nepomechie

Published Jan 1, 1999• 20 citations
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Abstract

We formulate a systematic Bethe ansatz approach for computing bound-state (`breather') S matrices for integrable quantum spin chains. We use this approach to calculate the breather boundary S matrix for the open XXZ spin chain with diagonal boundary fields. We also compute the soliton boundary S matrix in the critical regime.
DOI
10.1088/0305-4470/32/20/301

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