Imbalanced Fermi Gases at Unitarity

Understand

We consider imbalanced Fermi gases with strong attractive interactions, for which Cooper-pair formation plays an important role.

• The two-component mixtures consist either of identical fermionic atoms in two different hyperfine states, or of two different atomic species both occupying only a single hyperfine state.
• In both cases, the number of atoms for each component is allowed to be different, which leads to a spin imbalance, or spin polarization.
• Two different atomic species also lead to a mass imbalance.