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DPG

Stuttgart 2012 – scientific programme

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A: Fachverband Atomphysik

A 40: Poster: Ultra-cold atoms, ions and BEC

A 40.4: Poster

Thursday, March 15, 2012, 16:30–19:00, Poster.V

Atomic collisions with high angular momenta interactions in axially symmetric geometries — •Panagiotis Giannakeas1, Vladimir Melezhik2, and Peter Schmelcher11Zentrum für Optische Quantentechnologien, Universität Hamburg, Germany — 2Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, Dubna, Russian Federation

We observe and analyze d-wave resonant scattering of bosons in tightly confining harmonic waveguides. It is shown that the d-wave resonance emerges in the quasi-1D regime as an imprint of a 3D d-wave shape resonance. A scaling relation for the position of the d-wave resonance is provided. By changing the trap frequency, ultracold scattering can be continuously tuned from s-wave to d-wave resonant behavior. Additionally, we observed similar effect for fermionic collisions, where an f-wave shape resonance from the free space interferes with a p-wave confinement-induced resonance. The effect can be utilized for the realization of ultracold atomic gases interacting via higher partial waves and opens a novel possibility for studying strongly correlated atomic systems.

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