Quantum phases of atomic Fermi gases with anisotropic spin-orbit coupling

Details Quantum phases of atomic Fermi gases with anisotropic spin-orbit coupling Quantum phases of atomic Fermi gases with anisotropic spin-orbit coupling

2011-08-22

arxiv.org/abs/1108.4263v2

Phys. Rev. A 84, 043621 (2011)

Physics

Condensed Matter

Quantum Gases

10 pages with 7 figures; to appear in PRA

Scientific paper

We consider a general anisotropic spin-orbit coupling (SOC) and analyze the phase diagrams of both balanced and imbalanced Fermi gases for the entire BCS--Bose-Einstein condensate (BEC) evolution. In the first part, we use the self-consistent mean-field theory at zero temperature, and show that the topological structure of the ground-state phase diagrams is quite robust against the effects of anisotropy. In the second part, we go beyond the mean-field description, and investigate the effects of Gaussian fluctuations near the critical temperature. This allows us to derive the time-dependent Ginzburg-Landau theory, from which we extract the effective mass of the Cooper pairs and their critical condensation temperature in the molecular BEC limit.

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