Breaking the resilience of a two-dimensional Bose-Einstein condensate to fragmentation

Klaiman, Shachar and Lode, Axel U. J. and Streltsov, Alexej I. and Cederbaum, Lorenz S. and Alon, Ofir E.. (2014) Breaking the resilience of a two-dimensional Bose-Einstein condensate to fragmentation. Physical review. A, Atomic, Molecular, and Optical Physics, Vol. 90, H. 4 , 043620.

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Official URL: http://edoc.unibas.ch/dok/A6338915

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A two-dimensional Bose-Einstein condensate (BEC) split by a radial potential barrier is investigated. We determine on an accurate many-body level the system`s ground-state phase diagram as well as a time-dependent phase diagram of the splitting process. Whereas the ground state is condensed for a wide range of parameters, the time-dependent splitting process leads to substantial fragmentation. We demonstrate the dynamical fragmentation of a BEC despite its ground state being condensed. The results are analyzed using a mean-field model and suggest that a large manifold of low-lying fragmented excited states can significantly impact the dynamics of trapped two-dimensional BECs.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Theoretische Physik (Bruder)
UniBasel Contributors:Lode, Axel
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Institute of Physics
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:06 Feb 2015 09:59
Deposited On:06 Feb 2015 09:59

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