title: Detection of spatial correlations in an ultracold gas of fermions.
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.
authors.affiliation: JILA, University of Colorado and National Institute of Standards and Technology, Department of Physics, Boulder, Colorado 80309-0440, USA. markus.greiner@colorado.edu
authors.forename: M
authors.initials: M
authors.lastname: Greiner
authors.forename: C A
authors.initials: CA
authors.lastname: Regal
authors.forename: C
authors.initials: C
authors.lastname: Ticknor
authors.forename: J L
authors.initials: JL
authors.lastname: Bohn
authors.forename: D S
authors.initials: DS
authors.lastname: Jin