2003/06/30 by Chuanwei Zhang, Jie Liu, Mark G. Raizen +1 · 1 citation
Physics and Astronomy · #Bose–Einstein condensate #Classical mechanics #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Instability #Physics #Quantum #Quantum chaos and dynamical systems #Quantum mechanics #Quantum, superfluid, helium dynamics #Quasiperiodic function #cond-mat.soft #nlin.CD #quant-ph
paper · pdf · doi:10.1103/physrevlett.92.054101
published as Phys. Rev. Lett. 92, 054101 (2004) · 4 pages, 6 figs. A new affiliation is added. Accepted by Phys. Rev. Lett
arxiv created 2003/12/16 · openalex publication_date 2004/02/03 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
A periodically kicked ring of a Bose-Einstein condensate is considered as a nonlinear generalization of the quantum kicked rotor. For weak interactions between atoms, periodic motion (antiresonance) becomes quasiperiodic (quantum beating) but remains stable. There exists a critical strength of interactions beyond which quasiperiodic motion becomes chaotic, resulting in an instability of the condensate manifested by exponential growth in the number of noncondensed atoms. Similar behavior is observed for dynamically localized states (essentially quasiperiodic motions), where stability remains for weak interactions but is destroyed by strong interactions.