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

Shachar Klaiman, Axel U.J. Lode, Alexej I. Streltsov, Lorenz S. Cederbaum, Ofir E. Alon

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish
Article number043620
Number of pages6
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number4
StatePublished - 20 Oct 2014

Bibliographical note

Publisher Copyright:
© 2014 American Physical Society.

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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