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Observation of Bose-Einstein Condensation of Molecules
M. W. Zwierlein, C. A. Stan, C. H. Schunck +4
We have observed Bose-Einstein condensation of molecules. When a spin mixture of fermionic Li-6 atoms was evaporatively cooled in an optical dipole trap near a Feshbach resonance,…
Spectroscopic insensitivity to cold collisions in a two-state mixture of fermions
Martin W. Zwierlein, Zoran Hadzibabic, Subhadeep Gupta +1
We have experimentally demonstrated the absence of spectroscopic resonance shifts in a mixture of two interacting Fermi gases. This result is linked to observations in an ultracold…
Dissipationless flow and superfluidity in gaseous Bose-Einstein condensates
C. Raman, R. Onofrio, J. M. Vogels +2
We study dissipation in a dilute Bose gas induced by the motion of a macroscopic object. A blue-detuned laser beam focused on the center of a trapped gas of sodium atoms was scanne…
Surface Excitations in a Bose-Einstein Condensate
R. Onofrio, D. S. Durfee, C. Raman +3
Surface modes in a Bose-Einstein condensate of sodium atoms have been studied. We observed excitations of standing and rotating quadrupolar and octopolar modes. The modes were exci…