Mean field phase diagrams of imbalanced Fermi gases near a Feshbach resonance

TL;DR

This paper presents mean field phase diagrams for imbalanced Fermi gases near a Feshbach resonance, identifying phase separation regions and comparing predictions with experimental data.

Contribution

It provides the first mean field phase diagrams for imbalanced Fermi gases near a broad Feshbach resonance, including phase separation regions.

Findings

Good qualitative agreement with recent measurements

Identification of phase separation regions in the phase diagram

Prediction of phase boundaries near Feshbach resonance

Abstract

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.