Bogoliubov excitations in the quasiperiodic kicked rotor: stability of a kicked condensate and the quasi-insulator-metal transition
arXiv:1911.09027 · doi:10.1103/PhysRevA.101.053625
Abstract
We study the dynamics of a Bose-Einstein condensate in the quasiperiodic kicked rotor described by a Gross-Pitaevskii equation with periodic boundary conditions. As the interactions are increased, Bogoliubov excitations appear and deplete the condensate; we characterize this instability by considering the population of the first Bogoliubov mode, and show that it does not prevent, for small enough interaction strengths, the observation of the transition. However, the predicted subdiffusive behavior is not observed in the stable region. For higher interaction strengths, the condensate may be strongly depleted before this dynamical regimes set in.
arXiv comment7 pages, 4 figures. arXiv admin note: substantial text overlap with arXiv:1410.2587
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- Dynamics of kicked spin-orbit-coupled Bose-Einstein condensates
- Dynamical many-body delocalization transition of a Tonks gas in a quasi-periodic driving potential
- Many-Body Anderson Metal-Insulator Transition using Kicked Quantum Gases
- Observation of Many-body Dynamical Delocalization in a Kicked Ultracold Gas