Dynamics of a highly-degenerate, strongly-interacting Fermii gas of atoms

Published

Journal Article

We use all-optical methods to produce a highly-degenerate, Fermi gas of 6 Li atoms near a Feshbach resonance, where strong interactions are predicted. In this regime, the zero-energy scattering length is larger than the interparticle spacing, and both the mean field energy and the collision rate take on universal forms as a consequence of unitarity and many-body interactions. Our experiments study universal hydrodynamic expansion of the gas and universal mean field interactions. By measuring the cloud radii of the trapped gas, we determine a universal parameter for strongly interacting two-component Fermi systems, the ratio of the mean field energy to the kinetic energy. © 2004 Plenum Publishing Corporation.

Duke Authors

Cited Authors

  • Thomas, JE; Hemmer, SL; Kinast, J; Turlapov, A; Gehm, ME; O'Hara, KM

Published Date

  • January 1, 2004

Published In

Volume / Issue

  • 134 / 1-2

Start / End Page

  • 655 - 664

International Standard Serial Number (ISSN)

  • 0022-2291

Citation Source

  • Scopus