The XXX spin s quantum chain and the alternating $s^1$, $s^2$ chain with boundaries

Abstract

The integrable XXX spin s quantum chain and the alternating $s^1$, $s^2$ ($s^1-s^2=\frac{1}{2}$) chain with boundaries are considered. The scattering of their excitations with the boundaries via the Bethe ansatz method is studied, and the exact boundary S matrices are computed in the limit $s,s^{1,2}\to \infty$. Moreover, the connection of these models with the SU(2) Principal Chiral, WZW and the RSOS models is discussed.

21 pages Latex, one reference added, minor revisions in the title and the text, to appear in Nucl. Phys. B

References in corpus (2)

• Soliton S matrices for the critical A_{N-1}^(1) chain
• Principal chiral model scattering and the alternating quantum spin chain

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