  We map out the detailed phase diagram of a trapped ultracold Fermi gas with
population imbalance across a wide Feshbach resonance. We show that under the
local density approximation, the properties of the atoms in any (anisotropic)
harmonic traps are universally characterized by three dimensionless parameters:
the normalized temperature, the dimensionless interaction strength, and the
population imbalance. We then discuss the possible quantum phases in the trap,
and quantitatively characterize their phase boundaries in various typical
parameter regions.
