Quantum-group-invariant $D_{n+1}^{(2)}$ models: Bethe ansatz and finite-size spectrum

Holger Frahm, Sascha Gehrmann, Rafael I. Nepomechie +1

We consider the quantum integrable spin chain models associated with the Jimbo R-matrix based on the quantum affine algebra $D_{n+1}^{(2)}$, subject to quantum-group-invariant boun…