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Measurement of Sound Velocity in a Fermi Gas near a Feshbach Resonance
Abstract
Sound waves are excited in an optically trapped degenerate Fermi gas of spin-up and spin-down atoms with magnetically tunable interactions. Measurements are made throughout the crossover region, from a weakly interacting Fermi gas through the resonant Fermi superfluid regime to a Bose condensate of dimer molecules. The measured sound velocities test theories of hydrodynamic wave propagation and predictions of the equation of state. At resonance, the sound velocity exhibits universal scaling with the Fermi velocity, to within 1.8% over a factor of 30 in density.
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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
Quantum simulations with ultracold quantum gases
Bloch, I., Dalibard, J., & Nascimbène, S. (2012) · Nature Physics · doi:10.1038/nphys2259 · Cited by 2,339
Nearly perfect fluidity: from cold atomic gases to hot quark gluon plasmas
Schäfer, T., & Teaney, D. (2009) · Reports on Progress in Physics · doi:10.1088/0034-4885/72/12/126001 · Cited by 438
The BCS–BEC crossover: From ultra-cold Fermi gases to nuclear systems
Strinati, G. C., Pieri, P., Röpke, G., Schuck, P., & Urban, M. (2018) · Physics Reports · doi:10.1016/j.physrep.2018.02.004 · Cited by 264
Metadata
- Authors
- Joseph, J., Clancy, B., Luo, L., Kinast, J., Turlapov, A., & Thomas, J. E.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2007-04-24
- Volume
- 98
- Issue
- 17
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2091709195
- Cited by
- 178
- References
- 0
- FWCI
- 9.37
- Type
- journal article
- Language
- en
- Open access
- closed
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- Joseph, J., Clancy, B., Luo, L., Kinast, J., Turlapov, A., & Thomas, J. E. (2007). Measurement of Sound Velocity in a Fermi Gas near a Feshbach Resonance. Physical Review Letters. https://doi.org/10.1103/physrevlett.98.170401
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