2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/146241This is a continuation of a previous study of quantum vertex algebras of Zamolodchikov-Faddeev type. In this paper, we focus our attention on the special case associated to diagonal unitary rational quantum Yang-Baxter operators. We prove that the associated weak quantum vertex algebras, if not zero, are irreducible quantum vertex algebras with a normal basis in a certain sense.37 pagesQuantum AlgebraMathematical Physics17B69text