Lax pair formulation for a small-polaron chain with integrable boundaries
Xi-Wen Guan, Uwe Grimm, Rudolf A. Roemer
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 for the model are obtained. This provides a direct proof of the integrability of the model.
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