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BCS-BEC Crossover in a Gas of Fermi Atoms with a Feshbach Resonance
Open accessAbstract
We discuss the BCS-BEC crossover in a degenerate Fermi gas of two hyperfine states interacting close to a Feshbach resonance. We show that, by including fluctuation contributions to the free energy similar to that considered by Nozières and Schmitt-Rink, the character of the superfluid phase transition continuously changes from the BCS-type to the BEC-type, as the threshold of the quasimolecular band is lowered. In the BEC regime, the superfluid phase transition is interpreted in terms of molecules associated with both the Feshbach resonance and Cooper pairing.
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Citations
Cited by
Many-body physics with ultracold gases
Bloch, I., Dalibard, J., & Zwerger, W. (2008) · Reviews of Modern Physics · doi:10.1103/revmodphys.80.885 · Cited by 8,114
Resonantly paired fermionic superfluids
Gurarie, V., & Radzihovsky, L. (2007) · Annals of Physics · doi:10.1016/j.aop.2006.10.009 · Cited by 396
Production of Long-Lived UltracoldLi2Molecules from a Fermi Gas
Cubizolles, J., Bourdel, T., Kokkelmans, S. J. J. M. F., Shlyapnikov, G. V., & Salomon, C. (2003) · Physical Review Letters · doi:10.1103/physrevlett.91.240401 · Cited by 373
Pure Gas of Optically Trapped Molecules Created from Fermionic Atoms
Jochim, S., Bartenstein, M., Altmeyer, A., Hendl, G., Chin, C., Denschlag, J. H., & Grimm, R. (2003) · Physical Review Letters · doi:10.1103/physrevlett.91.240402 · Cited by 342
Metadata
- Authors
- Ohashi, Y., & Griffin, A.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2002-09-05
- Volume
- 89
- Issue
- 13
- Pages
- 130402-130402
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2092913833
- Cited by
- 463
- References
- 0
- FWCI
- 33.80
- Type
- journal article
- Language
- en
- Open access
- green
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