Resumo
Abstract: Inspired by the increasing possibility of experimental control in ultracoldatomic physics we introduce a new Lax operator and use it to construct and
solve models with two wells and two on well states together with its generalization for
n on well states. The models are solved by the algebraic Bethe ansatz method and
can be viewed as describing two Bose-Einstein condensates allowing for an exchange
interaction through Josephson tunneling.