Detection of spatial correlations in an ultracold gas of fermions |
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Authors: | Greiner M Regal C A Ticknor C Bohn J L Jin D S |
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Institution: | JILA, University of Colorado and National Institute of Standards and Technology, Department of Physics, Boulder, Colorado 80309-0440, USA. markus.greiner@colorado.edu |
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Abstract: | Spatial correlations are observed in an ultracold gas of fermionic atoms close to a Feshbach resonance. The correlations are detected by inducing spin-changing rf transitions between pairs of atoms. We observe the process in the strongly interacting regime for attractive as well as for repulsive atom-atom interactions and both in the regime of high and low quantum degeneracy. The observations are compared with a two-particle model that provides theoretical predictions for the measured rf transition rates. |
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