DocumentCode
2670979
Title
Decay of an ultracold fermionic lithium gas near a Feshbach resonance
Author
Dieckmann, K. ; Stan, C.A. ; Gupta, S. ; Hadzibabic, Z. ; Schunck, C.H. ; Ketterle, W.
Author_Institution
Dept. of Phys., MIT, Cambridge, MA, USA
fYear
2003
fDate
6-6 June 2003
Abstract
We studied the magnetic field dependence of the inelastic decay of an ultracold, optically trapped fermionic /sup 6/Li gas of different spin compositions. The spin mixture of the two lowest hyperfine states showed two decay resonances at 550 G and 680 G, consistent with the predicted Feshbach resonances for elastic s-wave collisions. The observed lifetimes of several hundred milliseconds are much longer than the expected time for Cooper pair formation and the phase transition to superfluidity in the vicinity of the Feshbach resonance.
Keywords
fermion systems; hyperfine structure; lithium; radiation pressure; resonant states; superfluidity; Cooper pair formation; Feshbach resonance; Li; elastic s-wave collisions; hyperfine states; inelastic decay; optically trapped fermionic gas; phase transition; spin mixture; superfluidity; ultracold fermionic lithium gas; Atom optics; Charge carrier processes; Clouds; Electron traps; Laboratories; Lithium; Magnetic fields; Magnetic resonance; Optical tuning; Physics;
fLanguage
English
Publisher
ieee
Conference_Titel
Quantum Electronics and Laser Science, 2003. QELS. Postconference Digest
Conference_Location
Baltimore, MD, USA
Print_ISBN
1-55752-749-0
Type
conf
DOI
10.1109/QELS.2003.237907
Filename
1276342
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