Abstract
For the current realization of the quantum affine algebras, Drinfeld gave a simple comultiplication of the quantum current operators. With this comultiplication, we study the related vertex operators for the case of U q ▪ and give an explicit bosonization of these new vertex operators. We use these vertex operators to construct the quantum current operators of U q ▪ n and discuss its connection with quantum boson-fermion correspondence.
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