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27 April 2024

» arxiv » cond-mat/0609390

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Precision Measurements of Collective Oscillations in the BEC-BCS crossover
A. Altmeyer ; S. Riedl ; C. Kohstall ; M. Wright ; R. Geursen ; M. Bartenstein ; C. Chin ; J. Hecker Denschlag ; R. Grimm ;
Date:	15 Sep 2006
Subject:	Other; Superconductivity
Abstract:	We report on precision measurements of the frequency of the radial compression mode in a strongly interacting, optically trapped Fermi gas of Li-6 atoms. Our results allow for a test of theoretical predictions for the equation of state in the BEC-BCS crossover. We confirm recent quantum Monte-Carlo results and rule out simple mean-field BCS theory. Our results show the long-sought beyond-mean-field effects in the strongly interacting BEC regime.
Source:	arXiv, cond-mat/0609390
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