Twisted quantum affine superalgebra Uq[gl(m vertical bar n)((2))] and new Uq[osp(m vertical bar n)] invariant R-matrices

摘要

The minimal irreducible representations of U-q[gl(m n)], i.e. those irreducible representations that are also irreducible under U-q[osp(m n)] are investigated and shown to be affinizable to give irreducible representations of the twisted quantum affine superalgebra U-q[gl(m n)((2))]. The U-q[osp(m n)] invariant R-matrices corresponding to the tensor product of any two minimal representations are constructed, thus extending our twisted tensor product graph method to the supersymmetric case. These give new solutions to the spectral-dependent graded Yang-Baxter equation arising from U-q[gl(m n)((2))], which exhibit novel features not previously seen in the untwisted or non-super cases. (C) 2000 Elsevier Science B.V. All rights reserved. [References: 21]