Hannover 2016 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 28: Ultracold plasmas and Rydberg systems (with Q)
A 28.9: Poster
Mittwoch, 2. März 2016, 16:30–19:00, Empore Lichthof
The bound and scattering properties in waveguide around Feshbach resonance — •gaoren wang1, panagiotis giannakeas2, and peter schmelcher1,3 — 1Zentrum für Optische Quantentechnologien, Universität Hamburg, Hamburg, Germany — 2Department of Physics and Astronomy, Purdue University, Indiana, USA — 3The Hamburg Centre for Ultrafast Imaging, Universität Hamburg, Hamburg, Germany
The two-body bound and scattering properties in an one-dimensional harmonic waveguide around the free-space magnetic Feshbach resonance are investigated based on the K matrix method. The multichannel characteristics of the interatomic interaction is taken into account, and the free-space phase shift is calculated in the frame work of quantum defect theory. We emphasize the following point: the bound state in the waveguide crosses the ground level of the transversal confinement at the magnetic field where the effective one-dimensional scattering length diverges.