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We have diagonalized the transfer matrix of the Uq[osp(2|2m)] vertex model by means of the algebraic Bethe ansatz method for a variety of grading possibilities. This allowed us to investigate the thermodynamic limit as well as the finite size properties of the corresponding spin chain in the massless regime. The leading behaviour of the finite size corrections to the spectrum is conjectured for arbitrary...
In this work we diagonalize the double-row transfer matrix of the supersymmetric t–J model with non-diagonal boundary terms by means of the algebraic Bethe ansatz. The corresponding reflection equations are studied and two distinct classes of solutions are found, one diagonal solution and other non-diagonal. Except for the case of two non-diagonal boundaries, the eigenvalues are given for arbitrary...
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