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Algebraic Bethe ansatz for open XXX model with triangular boundary matrices (1209.4269v2)
Published 19 Sep 2012 in math-ph, math.MP, and nlin.SI
Abstract: We consider open XXX spins chain with two general boundary matrices submitted to one constraint, which is equivalent to the possibility to put the two matrices in a triangular form. We construct Bethe vectors from a generalized algebraic Bethe ansatz. As usual, the method also provides Bethe equations and transfer matrix eigenvalues.
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