Phase diagram of a strongly interacting polarized Fermi gas in one dimension.

Fulde-Ferrell-Larkin-Ovchinnikov states in one-dimensional spin-polarized ultracold atomic Fermi gases

We present a systematic study of quantum phases in a one-dimensional spin-polarized Fermi gas. Three comparative theoretical methods are used to explore the phase diagram at zero temperature: the mean-field theory with either an order parameter in a single-plane-wave form or a self-consistently determined order parameter using the Bogoliubov–de Gennes equations, as well as the exact Bethe ansat...

Deformation of a trapped Fermi gas with unequal spin populations.

The real-space densities of a polarized strongly interacting two-component Fermi gas of 6Li atoms reveal two low-temperature regimes, both with a fully paired core. At the lowest temperatures, the unpolarized core deforms with increasing polarization. Sharp boundaries between the core and the excess unpaired atoms are consistent with a phase separation driven by a first-order phase transition. ...

Universal phase diagram of a strongly interacting Fermi gas with unbalanced spin populations

Phase Diagram of a Polarized Fermi Gas

The polarized Fermi gas, which has recently been realized in ultra-cold atomic gases where the number of atoms in the two spin states is different, has attracted many experimental and theoretical works. This paper introduces the phase diagram of the polarized Fermi gas at T = 0 and at finite temperature as well. Open questions that haven’t been solved are pointed out and available experiments a...

Finite-temperature phase diagram of a spin-polarized ultracold Fermi gas in a highly elongated harmonic trap

We investigate the finite-temperature properties of an ultracold atomic Fermi gas with spin population imbalance in a highly elongated harmonic trap. Previous studies at zero temperature showed that the gas stays in an exotic spatially inhomogeneous Fulde-Ferrell-Larkin-Ovchinnikov FFLO superfluid state at the trap center; while moving to the edge, the system changes into either a nonpolarized ...