Mainz 2017 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 22: Quantum Gases: Bosons III
Q 22.5: Vortrag
Dienstag, 7. März 2017, 12:00–12:15, P 204
Losing coherence by a local disturber: ultra-cold bosons scattering in three dimensions — •Valentin Bolsinger1,2, Sven Krönke1,2, and Peter Schmelcher1,2 — 1Zentrum für Optische Quantentechnologien, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany — 2The Hamburg Center for Ultrafast Imaging, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
We analyze the dynamics of a few interacting, ultra-cold bosons, initially displaced in the longitudinal direction of an anisotropic harmonic trap, scattering with a local disturber. We are interested in the cross-over from three towards one dimension and show how both particle correlations and dimensional coupling modify the coherence of the system as well as alter the decay of the center of mass oscillation. In doing so, the many-particle Schrödinger equation is solved by the recently optimized, ab-initio Multi-Layer Multi-Configurational Time-Dependent Hartee method for Bosons (ML-MCTDHB) for three dimensions.