Transitions in coherent oscillations between two trapped Bose-Einstein condensates
Year: 1999
Authors: Raghavan S., Smerzi A., Kenkre V.M.
Autors Affiliation: Univ Rochester, Dept Phys & Astron, Rochester Theory Ctr Opt Sci & Engn, Rochester, NY 14627 USA; Ist Nazl Fis Mat, I-34014 Trieste, Italy; Scuola Int Super Studi Avanzati, I-34014 Trieste, Italy; Univ New Mexico, Ctr Adv Studies, Albuquerque, NM 87131 USA; Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA.
Abstract: By solving numerically the tunneling quantum dynamics between two trapped Bose-Einstein condensates (BEC’s), we find two distinct time scales. On the short time scale, we recover semiclassical predictions such as macroscopic quantum self-trapping’’ and the amplitude transition, first studied in the polaron context, and the pi states, previously discovered in the context of BEC’s. On a much longer time scale, quantum dynamics shows that self-trapping is destroyed in contrast to semiclassical behavior. However, this time scale increases exponentially with the total number of condensate atoms, indicating that self-trapping and pi states’’ would be relevant and experimentally observable in the tunneling of BEC’s. [S1050-2947(99)51409-1].
Journal/Review: PHYSICAL REVIEW A
Volume: 60 (3) Pages from: R1787 to: R1790
KeyWords: Nonlinear Schrodinger-equation; Semiclassical Approximation; Quantum Dynamics; Phase; Dimer; Gas; Interference; Fluctuations; Systems; AtomsDOI: 10.1103/PhysRevA.60.R1787ImpactFactor: 2.639Citations: 110data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-11-24References taken from IsiWeb of Knowledge: (subscribers only)
