Form factors of integrable higher-spin XXZ chains and the affine quantum-group symmetry

We derive exactly scalar products and form factors for integrable higher-spin XXZ chains through the algebraic Bethe-ansatz method. Here spin values are arbitrary and different spins can be mixed. Transforming the symmetric R  -matrix into the asymmetric one that is compatible with subalgebra Uq(sl2)Uq(sl2) of Uq(sl2ˆ), we calculate the exact expressions by the representation theory of Uq(sl2)Uq(sl2). The results should be fundamental for calculating form factors and correlation functions systematically for various solvable models associated with the integrable XXZ spin chains.