  We propose phase diagrams for an imbalanced (unequal number of atoms or Fermi
surface in two pairing hyperfine states) gas of atomic fermions near a broad
Feshbach resonance using mean field theory. Particularly, in the plane of
interaction and polarization we determine the region for a phase separation
phase composed of normal and superfluid components. We compare our prediction
of phase boundaries with the recent measurment, and find a good qualitative
agreement.
