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Article
Effects of time-periodic linear coupling on two-component Bose-Einstein condensates in two dimensions
Physics Letters A (2008)
  • H Susanto
  • PG Kevrekidis, University of Massachusetts - Amherst
  • BA Malomed
  • FK Abdullaev
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.
Keywords
  • nonlinear schrodinger equations,
  • multiple components,
  • linear coupling
Publication Date
March 3, 2008
Publisher Statement
DOI: 10.1016/j.physleta.2007.09.073
Citation Information
H Susanto, PG Kevrekidis, BA Malomed and FK Abdullaev. "Effects of time-periodic linear coupling on two-component Bose-Einstein condensates in two dimensions" Physics Letters A Vol. 372 Iss. 10 (2008)
Available at: http://works.bepress.com/panos_kevrekidis/145/