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16 papers
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…
Association of molecules using a resonantly modulated magnetic field
Thomas M. Hanna, Thorsten Koehler, Keith Burnett
We study the process of associating molecules from atomic gases using a magnetic field modulation that is resonant with the molecular binding energy. We show that maximal conversio…
Classification of zero-energy resonances by dissociation of Feshbach molecules
Thomas M. Hanna, Krzysztof Goral, Emilia Witkowska +1
We study the dissociation of Feshbach molecules by a magnetic field sweep across a zero-energy resonance. In the limit of an instantaneous magnetic field change, the distribution o…
Collisional relaxation of Feshbach molecules and three-body recombination in 87Rb Bose-Einstein condensates
G. Smirne, R. M. Godun, D. Cassettari +9
We predict the resonance enhanced magnetic field dependence of atom-dimer relaxation and three-body recombination rates in a Rb Bose-Einstein condensate (BEC) close to 1007…
Production of cold molecules via magnetically tunable Feshbach resonances
Thorsten Koehler, Krzysztof Goral, Paul S. Julienne
Magnetically tunable Feshbach resonances were employed to associate cold diatomic molecules in a series of experiments involving both atomic Bose as well as two spin component Ferm…
Conventional character of the BCS-BEC cross-over in ultra-cold gases of 40K
Marzena H. Szymanska, Krzysztof Goral, Thorsten Koehler +1
We use the standard fermionic and boson-fermion Hamiltonians to study the BCS-BEC cross-over near the 202 G resonance in a two-component mixture of fermionic 40K atoms employed in…