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19 papers
Probing Fermionic Condensates by Fast-Sweep Projection onto Feshbach Molecules
S. Matyjaskiewicz, M. H. Szymanska, K. Goral
Fast sweep projection onto Feshbach molecules has been widely used as a probe of fermionic condensates. By determining the exact dynamics of a pair of atoms in time varying magneti…
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…
Molecular production in two-component atomic Fermi gases
Jan Chwedenczuk, Krzysztof Goral, Thorsten Koehler +1
We provide a practical approach to the molecular production via linear downward sweeps of Feshbach resonances in degenerate Fermi gases containing incoherent mixtures of two atomic…