Generalized coordinate Bethe ansatz for non diagonal boundaries
arXiv:1105.0338 · doi:10.1016/j.nuclphysb.2012.01.020
Abstract
We compute the spectrum and the eigenstates of the open XXX model with non-diagonal (triangular) boundary matrices. Since the boundary matrices are not diagonal, the usual coordinate Bethe ansatz does not work anymore, and we use a generalization of it to solve the problem.
11 pages; References added and misprints corrected