Generic regimes of quantum many-body dynamics of trapped bosonic systems with strong repulsive interactions

• Verfasst von: Streltsova, Oksana I. [VerfasserIn]
• Verfasst von: Alon, Ofir E. [VerfasserIn]
• Verfasst von: Cederbaum, Lorenz S. [VerfasserIn]
• Verfasst von: Streltsov, Alexej Iwanowitsch [VerfasserIn]
• Titel: Generic regimes of quantum many-body dynamics of trapped bosonic systems with strong repulsive interactions
• Verf.angabe: Oksana I. Streltsova, Ofir E. Alon, Lorenz S. Cederbaum, and Alexej I. Streltsov
• E-Jahr: 2014
• Jahr: 27 June 2014
• Fussnoten: Gesehen am 23.07.2020
• Titel Quelle: Enthalten in: Physical review / A
• Ort Quelle: College Park, Md., 1970
• Jahr Quelle: 2014
• Band/Heft Quelle: 89(2014,6) Artikel-Nummer 061602, 5 Seiten
• ISSN Quelle: 1094-1622
• DOI: doi:10.1103/PhysRevA.89.061602
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1725397501

Abstract

The nonequilibrium quantum dynamics of trapped bosons interacting by strong interparticle interaction of finite range in one, two, and three spatial dimensions is investigated on an accurate many-body level. We use different time-dependent processes to destabilize the systems' ground states: A sudden quench of the strength of the interparticle repulsion is accompanied by displacement of the trap. Two qualitatively different but otherwise generic dynamical quantum many-body behaviors are discovered. In the first, the overall “topology” of the ground-state density is preserved, whereas in the second the density totally “explodes.” An intuitive many-body time-dependent model is devised to interpret and explain the observations. The generality of the discovered scenarios is explicitly confirmed in traps of various shapes and dimensionality, and interparticle interactions of different forms and ranges. Implications are briefly discussed.