We study a simple model of interacting bosons on ad-dimensional cubic lattice whose
dynamics conserves both total boson number and total boson dipole moment. This model …

At zero temperature, a Galilean-invariant Bose fluid is expected to be fully superfluid. Here
we investigate theoretically and experimentally the quenching of the superfluid density of a …

A negative effective mass can be realized in quantum systems by engineering the
dispersion relation. A powerful method is provided by spin-orbit coupling, which is currently …

Since their first realization more than a decade ago spin-orbit-coupled Bose-Einstein
condensates have been the subject of intense theoretical and experimental investigations …

We experimentally and theoretically investigate the anisotropic speed of sound of an atomic
superfluid (SF) Bose-Einstein condensate in a 1D optical lattice. Because the speed of …

We investigate the superfluid fraction of crystalline stationary states within the framework of
mean-field Gross–Pitaevskii theory. Our primary focus is on a two-dimensional Bose …

We theoretically investigate a three-dimensional weakly interacting Bose gas with one-
dimensional Raman-type spin-orbit coupling at zero temperature. By employing an …

The phase diagram of a Bose-Einstein condensate with Raman-induced spin-orbit coupling
includes a stripe phase with supersolid features. In this work we develop a perturbation …

We study the scissors modes of a harmonically trapped Bose-Einstein condensate under the
influence of a synthetic magnetic field, which induces rigid rotational components in the …

By developing the hydrodynamic theory of spinor superfluids, we calculate the moment of
inertia of a harmonically trapped Bose-Einstein condensate with spin-orbit coupling. We …