Dynamic phase fluctuations in potential-driven Bose–Einstein condensate. (23rd January 2020)

• Record Type: Journal Article
• Authors: Ma, Decheng; Koval, Vladimir; Jia, Chenglong
• Is Part Of: New journal of physics. Volume 22:Number 1(2020:Jan.)
• Publication Date: 2020-01-23
• Subjects: Bose–Einstein condensate -- phase fluctuations -- decoherent effect -- multi-peak structure; Physics -- Periodicals; Physics; Periodicals; 530.05
• DOI: 10.1088/1367-2630/ab67eb
• Languages: English
• ISSNs: 1367-2630

Abstract

Abstract: We report on the dynamics of a Bose–Einstein condensate in one and two dimensions driven by the time-dependent harmonic trapping potential. Without the inter-particle interaction, the condensate exhibits the coherent behavior with the time-oscillating density distribution. When the inter-particle interaction is taken into consideration, the phase fluctuations, the multi-peak structure of the density distribution, and the coherence revival phenomenon, apart from the well-studied density oscillation behavior, can be observed in the condensate. Furthermore, it is demonstrated that due to the dimensional restriction these effects are more stable in the two and three-dimensional system, if compared to the one-dimensional case.