O. Lipan et al., FUSION RULES FOR QUANTUM TRANSFER-MATRICES AS A DYNAMICAL SYSTEM ON GRASSMANN MANIFOLDS, Modern physics letters A, 12(19), 1997, pp. 1369-1378
We show that the set of transfer matrices of an arbitrary fusion type
for an integrable quantum model obeys these bilinear functional relati
ons, which are identified with an integrable dynamical system on a Gra
ssmann manifold (higher Hirota, equation). The bilinear relations were
previously known for a particular class of transfer matrices correspo
nding to rectangular Young diagrams. We extend this result for general
Young diagrams. A general solution of the bilinear equations is prese
nted.