Paths and tableaux descriptions of Jacobi-Trudi determinant associated with quantum affine algebra of type C_n

Abstract

We study the Jacobi-Trudi-type determinant which is conjectured to be the q-character of a certain, in many cases irreducible, finite-dimensional representation of the quantum affine algebra of type C_n. Like the D_n case studied by the authors recently, applying the Gessel-Viennot path method with an additional involution and a deformation of paths, we obtain a positive sum expression over a set of tuples of paths, which is naturally translated into the one over a set of tableaux on a skew diagram.Comment: 21 pages, 10 figures, the final (journal) version published in SIGMA at http://www.emis.de/journals/SIGMA