The nested Bethe ansatz for ‘all’ open spin chains with diagonal boundary conditions
The nested Bethe ansatz for ‘all’ open spin chains with diagonal boundary conditions
We present in a unified and detailed way the nested Bethe ansatz for open spin chains based on or (super)algebras, with arbitrary representations (i.e., 'spins') on each site of the chain and diagonal boundary matrices (K+(u), K−(u)). The nested Bethe ansatz applies for a general K−(u), but a particular form …