Matrix product solution to the reflection equation associated with a coideal subalgebra of $U_q(A_{n-1}^{(1)})$

Atsuo Kuniba, Masato Okado, Akihito Yoneyama

We present a new solution to the reflection equation associated with a coideal subalgebra of $U_q(A_{n-1}^{(1)})$ in the symmetric tensor representations and their dual. Elements o…