Dark solitons in a two-component Bose-Einstein condensate

The creation and interaction of dark solitons in a two-component Bose-Einst ein condensate is investigated. For a miscible case, the interaction of dar k solitons in different components is studied. Various possible scenarios a re presented, including the formation of a soliton-soliton bound pair. We a lso analyze the soliton propagation in the presence of domains, and show th at a dark soliton can be transferred from one component to the other at the domain wall when it exceeds a critical velocity. For lower velocities mult iple reflections within the domain are observed, where the soliton is evapo rated and accelerated after each reflection until it finally escapes from t he domain.