Stuttgart 2012 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 34: Poster 1
Q 34.7: Poster
Dienstag, 13. März 2012, 16:30–19:00, Poster.I+II
Deviations from Gross-Pitaevskii dynamics for Bose-Einstein condensates in double-well potentials — •Bettina Gertjerenken1, Stephan Arlinghaus1, Niklas Teichmann1, and Christoph Weiss1,2 — 1Institut für Physik, Carl von Ossietzky Universität, D-26111 Oldenburg, Germany — 2Department of Physics, Durham University, Durham DH1 3LE, United Kingdom
For the description of Bose-Einstein condensates often the Gross-Pitaevskii equation is used. While giving a good description of experiments in a lot of situations there are cases where deviations in the N-particle dynamics occur [1]. Hence, the validity of this approach should be investigated thoroughly: for a Bose-Einstein condensate in a double-well potential we observe deviations of the Gross-Pitaevskii dynamics from N-particle dynamics for large particle numbers on experimentally feasible time scales.
[1] B. Gertjerenken et al, Phys. Rev. A 82, 023620 (2010).