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Lax pair formulation for a small-polaron chain with integrable boundaries

Xi-Wen Guan·Uwe Grimm·Rudolf A. Roemer
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Abstract

Using a fermionic version of the Lax pair formulation, we construct an integrable small-polaron model with general open boundary conditions. The Lax pair and the boundary supermatrices $K_{\pm}$ for the model are obtained. This provides a direct proof of the integrability of the model.

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Xi-Wen Guan, Uwe Grimm, Rudolf A. Roemer. 1998-11-06. Lax pair formulation for a small-polaron chain with integrable boundaries. https://doi.org/10.1002/(sici)1521-3889(199811)7%3A5%2F6%3C518%3A%3Aaid-andp518%3E3.0.co%3B2-y

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