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

• Verfasst von: Klaiman, Shachar [VerfasserIn]
• Verfasst von: Lode, Axel Ulrich Jürgen [VerfasserIn]
• Verfasst von: Streltsov, Alexej Iwanowitsch [VerfasserIn]
• Verfasst von: Cederbaum, Lorenz S. [VerfasserIn]
• Verfasst von: Alon, Ofir E. [VerfasserIn]
• Titel: Breaking the resilience of a two-dimensional Bose-Einstein condensate to fragmentation
• Verf.angabe: Shachar Klaiman, Axel U.J. Lode, Alexej I. Streltsov, Lorenz S. Cederbaum, and Ofir E. Alon
• E-Jahr: 2014
• Jahr: 20 October 2014
• Fussnoten: Gesehen am 06.07.2020
• Titel Quelle: Enthalten in: Physical review / A
• Ort Quelle: College Park, Md., 1970
• Jahr Quelle: 2014
• Band/Heft Quelle: 90(2014,4) Artikel-Nummer 043620, 6 Seiten
• ISSN Quelle: 1094-1622
• DOI: doi:10.1103/PhysRevA.90.043620
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1703739000

Abstract

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.