Publications [#248517] of John E. Thomas

Papers Published

1. Thomas, JE; Hemmer, SL; Kinast, J; Turlapov, A; Gehm, ME; O'Hara, KM, Dynamics of a highly-degenerate, strongly-interacting Fermi gas of atoms, Journal of Low Temperature Physics, vol. 104 no. 1-2 (2003), pp. 655-664, World Scientific [Gateway.cgi], [doi]
   (last updated on 2026/01/13)

   Abstract:
   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.