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- W2212915692 abstract "We investigate a quasi one-dimensional Bose–Einstein condensate in a harmonic trap with an additional dimple trap (dT) in the center. Within a zero-temperature Gross–Pitaevskii mean-field description we provide a one-dimensional physical intuitive model, which we solve by both a time-independent variational approach and numerical calculations. With this we obtain at first equilibrium results for the emerging condensate wave function which reveal that a dimple trap potential induces a bump or a dip in case of a red- or a blue-detuned Gaussian laser beam, respectively. Afterwards, we investigate how this dT induced bump/dip-imprint upon the condensate wave function evolves for two quench scenarios. At first we consider the generic case that the harmonic confinement is released. During the resulting time-of-flight expansion it turns out that the dT induced bump in the condensate wave function remains present, whereas the dip starts decaying after a characteristic time scale which decreases with increasing blue-detuned dT depth. Secondly, once the red- or blue-detuned dT is switched off, we find that bright shock-waves or gray/dark bi-soliton trains emerge which oscillate within the harmonic confinement with a characteristic frequency." @default.
- W2212915692 created "2016-06-24" @default.
- W2212915692 creator A5007979834 @default.
- W2212915692 creator A5068030326 @default.
- W2212915692 date "2016-05-06" @default.
- W2212915692 modified "2023-10-18" @default.
- W2212915692 title "Statics and dynamics of quasi one-dimensional Bose–Einstein condensate in harmonic and dimple trap" @default.
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- W2212915692 doi "https://doi.org/10.1088/1054-660x/26/6/065501" @default.
- W2212915692 hasPublicationYear "2016" @default.
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