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Heteronuclear molecules in an optical dipole trap
J. J. Zirbel, K. -K. Ni, S. Ospelkaus +6
We report on the creation and characterization of heteronuclear KRb Feshbach molecules in an optical dipole trap. Starting from an ultracold gas mixture of K-40 and Rb-87 atoms, we…
Exploring an ultracold Fermi-Fermi mixture: Interspecies Feshbach resonances and scattering properties of 6Li and 40K
E. Wille, F. M. Spiegelhalder, G. Kerner +10
We report on the observation of Feshbach resonances in an ultracold mixture of two fermionic species, 6Li and 40K. The experimental data are interpreted using a simple asymptotic b…
Coherent, adiabatic and dissociation regimes in coupled atomic-molecular Bose-Einstein condensates
Pascal Naidon, Eite Tiesinga, Paul S. Julienne
We discuss the dynamics of a Bose-Einstein condensate of atoms which is suddenly coupled to a condensate of molecules by an optical or magnetic Feshbach resonance. Three limiting r…
Excited Thomas-Efimov levels in ultracold gases
Mark D. Lee, Thorsten Koehler, Paul S. Julienne
Since the early days of quantum physics, the complex behavior of three interacting particles has been the subject of numerous experimental and theoretical studies. In a recent Lett…
Quantum Scattering of Distinguishable Bosons using an Ultracold Atom Collider
Angela S. Mellish, Niels Kjaergaard, Paul S. Julienne +1
We describe a new implementation of magnetic collider for investigating cold collisions between ultracold atomic clouds in different spin states, and we use this to investigate sca…
A two-channel R-matrix analysis of magnetic field induced Feshbach resonances
Nicolai Nygaard, Barry I. Schneider, Paul S. Julienne
A Feshbach resonance arises in cold atom scattering due to the complex interplay between several coupled channels. However, the essential physics of the resonance may be encapsulat…