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Momentum distribution of a Fermi gas of atoms in the BCS-BEC crossover

C. A. Regal·M. Greiner·S. Giorgini·M. Holland·D. S. Jin
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Abstract

We observe dramatic changes in the atomic momentum distribution of a Fermi gas in the region of the BCS-BEC crossover. We study the shape of the momentum distribution and the kinetic energy as a function of interaction strength. The momentum distributions are compared to a mean-field crossover theory, and the kinetic energy is compared to theories for the two weakly interacting limits. The temperature dependence of the distribution is also presented.

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C. A. Regal, M. Greiner, S. Giorgini, M. Holland, D. S. Jin. 2005-08-15. Momentum distribution of a Fermi gas of atoms in the BCS-BEC crossover. https://doi.org/10.1103/physrevlett.95.250404

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