title: Comment on "Pairing and phase separation in a polarized Fermi gas".
abstract: Partridge et al. (Reports, 27 January 2006, p. 503) reported pairing and phase separation in a polarized Fermi gas. We argue that it is not possible to distinguish the superfluid from the normal regimes in the presented data, or to discern which clouds were phase-separated. Some of the reported conclusions are inconsistent with recent experiments.
authors.affiliation: Department of Physics, MIT-Harvard Center for Ultracold Atoms, and Research Laboratory of Electronics, MIT, Cambridge, MA 02139, USA.
authors.forename: Martin W
authors.initials: MW
authors.lastname: Zwierlein
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Ketterle