Hannover 2010 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 16: Quantum Gases: Interaction Effects I

Q 16.6: Talk

Tuesday, March 9, 2010, 15:30–15:45, E 001

Multi-layer stacks of dipolar Bose-Einstein condensates — •Andrej Junginger, Jörg Main, and Günter Wunner — 1. Institut für Theoretische Physik, Universität Stuttgart, 70550 Stuttgart

Multi-layer stacks of dipolar Bose-Einstein condensates are investigated variationally using a Gaussian trial wave function for each condensate. The individual condensates arranged in harmonic traps only interact via the long-range dipole-dipole interaction while there is an additional attractive contact interaction present in each condensate.

The stationary states of the stack are calculated minimizing the mean-field energy and the dynamics of the system are obtained applying a time-dependent variational principle. Introducing canonical variables this system is equivalent to a many-body Hamiltonian system with particle interaction. The energy exchange between the condensates in an excited stack is analyzed.