Abstract
We report measurements showing the universal behaviour of the static structure factor and both the temperature and interaction dependence of pair correlations in a strongly interacting Fermi gas. We utilize Bragg spectroscopy to obtain the static structure factor by recording excitation spectra of trapped clouds of ultracold 6Li atoms. Our results show clear evidence of strong short-range pair correlations above the critical temperature for superfluidity through the BEC-BCS crossover and agree well with theoretical calculations.
© 2011 AOS
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