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

Guan, Xi-Wen; Grimm, Uwe and Römer, Rudolf A. (1998). Lax pair formulation for a small-polaron chain with integrable boundaries. Annalen der Physik, 7(5-6) pp. 518–522.

DOI: https://doi.org/10.1002/(SICI)1521-3889(199811)7:5/6%3C518::AID-ANDP518%3E3.0.CO;2-Y

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 for the model are obtained. This provides a direct proof of the integrability of the model.

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