Superfluid-insulator transition and BCS-BEC crossover in dirty ultracold Fermi gas

Abstract

Superfluid-insulator transition in an ultracold Fermi gas in the external disorder potential of the amplitude $V_0$ is studied as a function of the concentration of the gas $n$ and magnetic field $B$ in the presence of the Feshbach resonance. We find the zero temperature phase diagrams in the plane ($B,n$) at a given $V_0$ and in the plane $(V_0,n)$ at a given $B$. Our results for BEC side of the diagram are also valid for the superfluid-insulator transition in a Bose gas.

Reference added, typos corrected

References in corpus (7)

• Weakly bound dimers of fermionic atoms
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• Ultracold Bose Gases in 1D Disorder: From Lifshits Glass to Bose-Einstein Condensate
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Cited by in corpus (3)

• Localization-Delocalization Transition of Indirect Excitons in Lateral Electrostatic Lattices
• Compensation driven superconductor-insulator transition
• Variational approach for Bose-Einstein condensates in strongly disordered traps