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Article
Dynamics of trapped bright solitons in the presence of localized inhomogeneities
Physics Letters A (2005)
  • G. Herring
  • Panos Kevrekidis, UMASS, Amherst
  • R. Carretero-Gonzalez
  • B. A. Malomed
  • D. J. Frantzeskakis
  • A. R. Bishop
Abstract
We examine the dynamics of a bright solitary wave in the presence of a repulsive or attractive localized ``impurity'' in Bose-Einstein condensates (BECs). We study the generation and stability of a pair of steady states in the vicinity of the impurity as the impurity strength is varied. These two new steady states, one stable and one unstable, disappear through a saddle-node bifurcation as the strength of the impurity is decreased. The dynamics of the soliton is also examined in all the cases (including cases where the soliton is offset from one of the relevant fixed points). The numerical results are corroborated by theoretical calculations which are in very good agreement with the numerical findings.
Disciplines
Publication Date
September 26, 2005
Publisher Statement
This is the pre-published version harvested from arXiv. The published version is located at http://dx.doi.org/10.1016/j.physleta.2005.07.008
Citation Information
G. Herring, Panos Kevrekidis, R. Carretero-Gonzalez, B. A. Malomed, et al.. "Dynamics of trapped bright solitons in the presence of localized inhomogeneities" Physics Letters A Vol. 345 Iss. 1-3 (2005)
Available at: http://works.bepress.com/panos_kevrekidis/254/