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Fast Sweeping into Feshbach Molecules as a Probe of Fermionic Condensates | S. Matyjaskiewicz
; M. H. Szymanska
; K. Goral
; | Date: |
28 May 2008 | Abstract: | Fast sweep projection onto Feshbach molecules has been widely used as a probe
to explore the properties of fermionic condensates, in particular the
condensate fraction. By determining the exact dynamics of a pair of atoms in
time varying magnetic fields across a Feshbach resonance, we calculate the
number of condensed and noncondensed molecules created after fast magnetic
field sweeps from the BCS to the BEC side of the resonance. We analyse the
dependence of the molecular conversion efficiency for condensed and
noncondensed molecules on the sweep rate, and on the initial and final magnetic
fields, for $^{40}$K and $^{6}$Li resonances; and discuss the relation between
the initial fermionic condensate fraction and the molecular condensate fraction
measured after the sweep. | Source: | arXiv, 0805.4295 | Services: | Forum | Review | PDF | Favorites |
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