Momentum distribution of a Fermi gas of atoms in the BCS-BEC crossover
arXiv:cond-mat/0507316 · doi:10.1103/PhysRevLett.95.250404
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.
Includes revisions to Figure 3 and references