Hannover 2013 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 3: Quantum gases: Interaction effects I

Q 3.2: Vortrag

Montag, 18. März 2013, 11:30–11:45, E 001

Ground states of dipolar Bose-Einstein condensates in triple-well potentials — •Damir Zajec and Günter Wunner — 1. Institut für Theoretische Physik, Universität Stuttgart

Dipolar Bose-Einstein condensates in triple-well potentials are model systems for larger periodic systems with important contributions of non-local dipole-dipole interactions. We perform grid calculations to determine the ground states of such systems by means of the Gross-Pitaevskii equation. The split-operator method is used to apply a general time evolution operator to an initial state, where time evolution is mainly described by a series of Fourier transforms. Since this numerical scheme is very demanding, the parallel computing architecture CUDA was used to implement the code. We study repulsive and attractive configurations with linear and triangular arrangements and present phase diagrams to illustrate the occurrence of different phases.