BEC-BCS crossover of a trapped Fermi gas without using the local density approximation

Measuring local properties of a Fermi gas in the BCS-BEC crossover

Disorder Induced BCS–BEC Crossover in an Ultracold Fermi Gas

We develop the formalism for BCS–BEC crossover in the presence of weak random impurity and calculate the effect of the random potentials on the basic mean-field quantities. The disorder has been included through the Nozières and Schmitt–Rink theory of superconducting fluctuations, and we obtain the disorder induced superfluid order parameter and chemical potential through a self-consistent calc...

BCS-BEC crossover in an asymmetric two-component Fermi gas

– We discuss the superfluid phase transition of a strongly interacting Fermi gas with unequal (asymmetric) chemical potentials in two pairing hyperfine states, and map out its phase diagram near the BCS-BEC crossover. Our approach includes the fluctuation contributions of “preformed Cooper pairs” to the thermodynamic potential at finite temperature. We show that, below a critical difference in ...

Broad versus narrow Fano - Feshbach resonances in the BCS - BEC crossover with trapped Fermi atoms

– With reference to the broad and narrow Fano-Feshbach resonances of 6 Li at about 822G and 543G, we show that for the broad resonance a molecular coupled-channel calculation can be mapped with excellent accuracy onto an effective single-channel problem with a contact interaction. This occurs for a wide enough range of the magnetic field, that the full BCS-BEC crossover can be realized with a t...

Studying the BCS-BEC crossover regime with a Fermi gas of atoms