Abstract : We establish an explicit algebra isomorphism between the quantum reflection algebra for the $U_q(\hat{sl_2})$ R-matrix and a new type of current algebra. These two algebras are shown to be two realizations of a special case of tridiagonal algebras (q-Onsager).
P. Baseilhac, K. Shigechi. A new current algebra and the reflection equation. Letters in Mathematical Physics, Springer Verlag, 2010, 92 (1), pp.47-65. ⟨10.1007/s11005-010-0380-x⟩. ⟨hal-00784872⟩