Abstract
Fermi gases with repulsive interactions are characterized by measuring their compressibility as a function of interaction strength. The compressibility is obtained from in-trap density distributions monitored by phase-contrast imaging. For interaction parameters , fast decay of the gas prevents the observation of equilibrium profiles. For smaller interaction parameters, the results are adequately described by first-order perturbation theory. We have developed a phase-contrast imaging method that compensates for dispersive distortions of the images.
- Received 18 April 2012
DOI:https://doi.org/10.1103/PhysRevA.85.063615
©2012 American Physical Society
Synopsis
Ephemeral Fermions
Published 21 June 2012
The compressibility of a gas of repulsive fermions has been measured with a novel imaging technique.
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