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Updated: Sep 26, 2026

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
Published on: March 30, 2017
Measuring the condensate fraction of rapidly rotating trapped boson systems: off-diagonal order from the density
Jairo Sinova1, C B Hanna, A H MacDonald
1Department of Physics, University of Texas at Austin, Austin, Texas 78712-1081, USA.
Abstract:
We demonstrate a direct connection between the density profile of a system of ultracold trapped bosonic particles in the rapid-rotation limit and its condensate fraction. This connection can be used to probe the crossover from condensed vortex-lattice states to uncondensed quantum-fluid states that occurs in rapidly rotating boson systems as the particle density decreases or the rotation frequency increases. We illustrate our proposal with a series of examples, including ones based on models of realistic finite trap systems, and comment on its application to freely expanding boson density profile measurements.
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