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Mainz 2017 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 14: Quantum Gases: Bosons II

Q 14.7: Talk

Monday, March 6, 2017, 18:30–18:45, P 204

Properties of quantum filaments in dipolar Bose-Einstein condensates — •Falk Wächtler and Luis Santos — Institut für Theoretische Physik, Leibniz Universität Hannover, Hannover, Germany

Recent experiments with the highly magnetic atoms dysprosium and erbium have revealed the formation of stable quantum droplets in dipolar Bose-Einstein condensates. This surprising result has been explained by the stabilization given by quantum fluctuations. We will discuss properties of a dipolar BEC in the presence of quantum stabilization focusing in particular on the low-lying excitations all the way from the mean-field to the droplet regime. Moreover, we will show the effects of three-body losses for the dynamics of droplet formation as well as the role of quantum fluctuations in the strength of the three-body losses. This shows a large increase of the losses in the droplet regime significantly lowering their lifetime.

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