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Density modulations in an elongated Bose-Einstein condensate released from a disordered potential
Physical Review A. Atomic, Molecular, and Optical Physics
We observe large density modulations in time-of-flight images of elongated Bose-Einstein condensates, initially confined in a harmonic trap and in the presence of weak disorder. The development of these modulations during the time-of-flight and their dependence with the disorder are investigated. We render an account of this effect using numerical and analytical calculations. We conclude that the observed large density modulations originate from the weak initial density modulations induced bydoi:10.1103/physreva.77.033631 fatcat:ju7umcfetzffti4rqnxca6nzse