Abstract
The creation, interaction, observation and stability of darksolitons in two-component condensates are investigated. As afirst scenario, we consider the case of miscible components,analysing the creation of solitons in different components viaphase-imprinting, and the soliton-soliton interaction indifferent situations, which include the formation of asoliton-soliton binary system and free single solitons accompanied by a filling of the other component. The differentregimes of interaction are analysed numerically, and comparedwith a variational calculation. The observability of thesolitons and their stability are also analysed. In a secondscenario, we study the soliton propagation in the presence ofdomains, and show that a dark soliton can be transferred fromone component to the other at the domain wall when exceedinga critical velocity.
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