We consider imbalanced Fermi gases with strong attractive interactions, for which Cooper-
pair formation plays an important role. The two-component mixtures consist either of …

We study analytically an analog of the Andreev reflection at a normal-superfluid interface.
The polariton gapped superfluid region is achieved by quasiresonant optical pumping. The …

The density-matrix renormalization group is employed to investigate a harmonically trapped
imbalanced Fermi condensate based on a one-dimensional attractive Hubbard model. The …

Motivated by recent observations of phase-segregated binary Bose-Einstein condensates,
we propose a method to calculate the excess energy due to the interface tension of a …

We present measurements of spin transport in ultracold gases of fermionic 6 Li in a mixture
of two spin states at a Feshbach resonance. In particular, we study the spin-dipole mode …

We demonstrate the existence of a type of spatially localized excitations in the unitary Fermi
gas: spin-polarized droplets with a peculiar internal structure involving an abrupt change in …

We propose a method for creating far-field optical barrier potentials for ultracold atoms with
widths that are narrower than the diffraction limit and can approach tens of nanometers. The …

Discrete time crystalline phases have attracted significant theoretical and experimental
attention in the last few years. Such systems require a seemingly impossible combination of …

We study the bosonic analog of Andreev reflection at a normal-superfluid interface where
the superfluid is a boson condensate. We model the normal region as a zone where …

Within Gross-Pitaevskii (GP) theory we derive the interface potential V (ℓ) which describes
the interaction between the interface separating two demixed Bose-condensed gases and …