We provide explicit formulae for highest-weight to highest-weight correlation
functions of perfect vertex operators of Uq​(sl(2)^​) at
arbitrary integer level â„“. They are given in terms of certain Macdonald
polynomials. We apply this construction to the computation of the ground state
of higher spin vertex models, spin chains (spin â„“/2 XXZ) or loop models in
the root of unity case q=−e−iπ/(ℓ+2)