arXiv:2402.05442 · Journal of Physics A Mathematical and Theoretical
Triangular solutions to the reflection equation for U q ( s l n ^ )
Dmitry Kolyaskin, Vladimir V. Mangazeev
Abstract
Abstract We study solutions of the reflection equation related to the quantum affine algebra U q ( s l n ^ ) . First, we explain how to construct a family of stochastic integrable vertex models with fixed boundary conditions. Then, we construct upper- and lower-triangular solutions of the reflection equation related to symmetric tensor representations of U q ( s l n ^ ) with arbitrary spin. We also prove the star–star relation for the Boltzmann weights of the Ising-type model, conjectured by Bazhanov and Sergeev, and use it to verify certain properties of the solutions obtained.