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.

arXiv commentReference added, typos corrected

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• Localization-Delocalization Transition of Indirect Excitons in Lateral Electrostatic Lattices
• Weakly interacting Bose gas in a random environment
• Dilute Bose gas with correlated disorder: A Path Integral Monte Carlo study
• Measurement of spectral functions of ultracold atoms in disordered potentials
• Matter Wave Transport and Anderson Localization in Anisotropic 3D Disorder
• Superfluid transition in a Bose gas with correlated disorder
• Direct Observation of Fragmentation in a Disordered, Strongly Interacting Fermi Gas
• The evolution from BCS to BEC superfluidity in the presence of disorder
• Diffusion of cold atomic gases in the presence of an optical speckle potential
• Compensation driven superconductor-insulator transition
• Variational approach for Bose-Einstein condensates in strongly disordered traps
• One- and Two-Particle Problem with Correlated Disorder Potential