Effects of time-periodic linear coupling on two-component Bose-Einstein condensates in two dimensions

Publication Date

2008

Journal or Book Title

PHYSICS LETTERS A

Abstract

We examine two-component Gross–Pitaevskii equations with nonlinear and linear couplings, assuming self-attraction in one species and self-repulsion in the other, while the nonlinear inter-species coupling is also repulsive. For initial states with the condensate placed in the self-attractive component, a sufficiently strong linear coupling switches the collapse into decay (in the free space). Setting the linear-coupling coefficient to be time-periodic (alternating between positive and negative values, with zero mean value) can make localized states quasi-stable for the parameter ranges considered herein, but they slowly decay. The 2D states can then be completely stabilized by a weak trapping potential. In the case of the high-frequency modulation of the coupling constant, averaged equations are derived, which demonstrate good agreement with numerical solutions of the full equations.

Comments

The published version is located at http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TVM-4PWKSJK-5&_user=1516330&_coverDate=03%2F03%2F2008&_rdoc=1&_fmt=high&_orig=search&_origin=search&_sort=d&_docanchor=&view=c&_searchStrId=1579336238&_rerunOrigin=google&_acct=C000053443&_version=1&_urlVersion=0&_userid=1516330&md5=5fad2600e42202e86488c18cb5f6b921&searchtype=a

Pages

1631-1638

Volume

372

Issue

10

Link to Full Text

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