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Dark solitons in a two-component Bose-Einstein condensate

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arxiv cond-mat/0010232 v1 pith:QRZEGMX5 submitted 2000-10-17 cond-mat.soft cond-mat.stat-mech

Dark solitons in a two-component Bose-Einstein condensate

classification cond-mat.soft cond-mat.stat-mech
keywords darkdomainsolitonsolitonsbose-einsteincondensateinteractiontwo-component
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The creation and interaction of dark solitons in a two-component Bose-Einstein condensate is investigated. For a miscible case, the interaction of dark solitons in different components is studied. Various possible scenarios are presented, including the formation of a soliton-soliton bound pair. We also analyze the soliton propagation in the presence of domains, and show that 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 multiple reflections within the domain are observed, where the soliton is evaporated and accelerated after each reflection until it finally escapes from the domain.

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