Higher level $q$-oscillator representations for $U_q(C_n^{(1)}),U_q(C^{(2)}(n+1))$ and $U_q(B^{(1)}(0,n))$

Abstract

We introduce higher level $q$-oscillator representations for the quantum affine (super)algebras of type $C_n^{(1)},C^{(2)}(n+1)$ and $B^{(1)}(0,n)$. These representations are constructed by applying the fusion procedure to the level one $q$-oscillator representations which were obtained through the studies of the tetrahedron equation. We prove that these higher level $q$-oscillator representations are irreducible. For type $C_n^{(1)}$ and $C^{(2)}(n+1)$, we compute their characters explicitly in terms of Schur polynomials.

41 pages; Theorem 4.1 has been added, where we prove the irreducibility of the higher level $q$-oscillator representation in a uniform way. The proof is given in Appendix D

References in corpus (1)

• Existence of Kirillov-Reshetikhin crystals for nonexceptional types

Cited by in corpus (1)

• Affinization of $q$-oscillator representations of $U_q({\mathfrak{gl}}_n)$