1209.4269 (S. Belliard et al.)

Algebraic Bethe ansatz for open XXX model with triangular boundary
matrices    [PDF]

S. Belliard, N. Crampe, E. Ragoucy

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.

View original: http://arxiv.org/abs/1209.4269