Unitarity-limited elastic collision rate in a harmonically trapped Fermi gas

M. E. Gehm, S. L. Hemmer, K. M. O’Hara, J. E. Thomas

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


We derive the elastic collision rate for a harmonically trapped Fermi gas in the extreme unitarity limit where the s-wave scattering cross section is [Formula Presented] with [Formula Presented] the relative momentum. The collision rate is given in the form [Formula Presented]—the product of a universal collision rate [Formula Presented] and a dimensionless function of the ratio of the temperature T to the Fermi temperature [Formula Presented] We find that I has a peak value of [Formula Presented] at [Formula Presented] [Formula Presented] for [Formula Presented] and [Formula Presented] for [Formula Presented] We estimate the collision rate for recent experiments on a strongly-interacting degenerate Fermi gas of atoms.

Original languageEnglish (US)
Pages (from-to)4
Number of pages1
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number1
StatePublished - 2003

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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