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Feshbach-Resonant Interactions in 40K and 6Li Degenerate Fermi Gases | | Matt Mackie
; Jyrki Piilo
; | | Date: |
20 Dec 2004 | | Journal: | Phys. Rev. Lett. 94, 060403 (2005) DOI: 10.1103/PhysRevLett.94.060403 | | Subject: | Other | cond-mat.other | | Abstract: | We theoretically examine a system of Fermi degenerate atoms coupled to bosonic molecules by a Feshbach resonance, focusing on the superfluid transition to a molecular Bose-Einstein condensate dressed by Cooper pairs of atoms. This problem raises an interest because it is unclear at present whether bimodal density distributions observed recently in 40-K and 6-Li are due to a condensate of bosonic molecules or fermionic atom pairs. As opposed to 40-K, we find that any measurable fraction of above-threshold bosonic molecules are necessarily absent for the 6-Li system in question, which strongly implicates Cooper pairs as the culprit behind its bimodal distributions. | | Source: | arXiv, cond-mat/0501475 | | Other source: | [GID 360610] pmid15783710 | | Services: | Forum | Review | PDF | Favorites | |
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