Hannover 2016 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 7: Ultracold Atoms, Ions and Molecules II (with A)
Q 7.5: Vortrag
Montag, 29. Februar 2016, 15:30–15:45, e001
Half-life times of topological modes of a Bose-Einstein condensate in a gravito optical surface trap — •Zelimir Marojevic, Ertan Göklü, and Claus Lämmerzahl — ZARM, Am Fallturm, 28359 Bremen
We have numerically estimated the half-life times of six topological modes in an axially symmetric gravito optical surface trap V(ρ,z)=ν2 ρ2 + β z. The topological modes are solutions to the stationary Gross–Pitaevskii equation, which correspond to min-max saddle points of the functional, and these solutions are dynamically unstable. Due to the non linear nature of the problem the time evolution of a small perturbation is very complicated and shows different phases.