Dynamical formation and interaction of bright solitary waves and solitons in the collapse of Bose-Einstein condensates with attractive interactions

Dabrowska-Wuster, B. J., Wuster, S. and Davis, M. J. (2009) Dynamical formation and interaction of bright solitary waves and solitons in the collapse of Bose-Einstein condensates with attractive interactions. New Journal of Physics, 11 053017-1-053017-15. doi:10.1088/1367-2630/11/5/053017


Author Dabrowska-Wuster, B. J.
Wuster, S.
Davis, M. J.
Title Dynamical formation and interaction of bright solitary waves and solitons in the collapse of Bose-Einstein condensates with attractive interactions
Journal name New Journal of Physics   Check publisher's open access policy
ISSN 1367-2630
Publication date 2009-05-27
Year available 2009
Sub-type Article (original research)
DOI 10.1088/1367-2630/11/5/053017
Open Access Status DOI
Volume 11
Start page 053017-1
End page 053017-15
Total pages 15
Editor E. Bodenschatz
Place of publication United Kingdom
Publisher Institute of Physics Publishing
Language eng
Subject C1
970102 Expanding Knowledge in the Physical Sciences
020601 Degenerate Quantum Gases and Atom Optics
Abstract We model the dynamics of formation of multiple, long-lived, bright solitary waves (BSWs) in the collapse of Bose–Einstein condensates with attractive interactions as studied in the experiment of Cornish et al (2006 Phys. Rev. Lett. 96 170401). We use both mean-field and approximate quantum field simulation techniques. While a number of separated wave packets form as observed in the experiment, they do not have a repulsive π phase difference as has been previously inferred. We observe that the inclusion of quantum fluctuations causes soliton dynamics to be predominantly repulsive in one-dimensional (1D) simulations independent of their initial relative phase. However, indicative 3D simulations do not show a similar effect. In contrast, in 3D quantum noise has a negative impact on BSW lifetimes. Finally, we show that condensate oscillations, after the collapse, may serve to deduce three-body recombination rates.
Keyword Quantum gases
Liquids and solids
Statistical physics
Nonlinear systems
Q-Index Code C1
Q-Index Status Confirmed Code
Grant ID DP0343094
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
2010 Higher Education Research Data Collection
 
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Created: Thu, 03 Sep 2009, 18:04:12 EST by Mr Andrew Martlew on behalf of ARC Centre of Excellence for Quantum-Atom Optics