4.8 Article

Formation and dynamics of many-boson fragmented states in one-dimensional attractive ultracold gases

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PHYSICAL REVIEW LETTERS
卷 100, 期 13, 页码 -

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AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.100.130401

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The dynamics of attractive ultracold bosonic clouds in one dimension is studied by solving the many-particle time-dependent Schrodinger equation. The initially coherent wave packet can dynamically dissociate into two parts when its energy exceeds a threshold value. Noticeably, the time-dependent Gross-Pitaevskii theory does not show up the splitting. We call the split object fragmenton. It possesses remarkable properties; in particular, it is macroscopically fragmented. A simple static model predicts the existence of fragmented states responsible for the formation and dynamics of fragmentons.

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