Publicação: Bright solitons in coupled defocusing NLS equation supported by coupling: Application to Bose-Einstein condensation
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Elsevier B.V.
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We demonstrate the formation of bright solitons in coupled self-defocusing nonlinear Schrodinger (NLS) equation supported by attractive coupling. As an application we use a time-dependent dynamical mean-field model to study the formation of stable bright solitons in two-component repulsive Bose-Einstein condensates (BECs) supported by interspecies attraction in a quasi one-dimensional geometry. When all interactions are repulsive, there cannot be bright solitons. However, bright solitons can be formed in two-component repulsive BECs for a sufficiently attractive interspecies interaction, which induces an attractive effective interaction among bosons of same type. (c) 2005 Elsevier B.V. All rights reserved.
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Physics Letters A. Amsterdam: Elsevier B.V., v. 346, n. 1-3, p. 179-185, 2005.
