Matter waves inside periodic potentials are well known from solid-state physics, where
electrons interacting with a crystal lattice are considered. Atomic Bose-Einstein condensates …

During the last decade, many exciting phenomena have been experimentally observed and
theoretically predicted for ultracold atoms in optical lattices. This paper reviews these rapid …

We experimentally study the fluid flow induced by a broad, penetrable barrier moving
through an elongated dilute gaseous Bose-Einstein condensate. The barrier is created by a …

Critical velocities have been observed in an ultracold superfluid Fermi gas throughout the
BEC-BCS crossover. A pronounced peak of the critical velocity at unitarity demonstrates that …

The stability of superfluid currents in a system of ultracold bosons was studied using a
moving optical lattice. Superfluid currents in a very weak lattice become unstable when their …

In this work, we analyze the dynamical properties of periodically driven band models.
Focusing on the case of Bose-Einstein condensates, and using a mean-field approach to …

We have observed parametric generation and amplification of ultracold atom pairs. A Rb 87
Bose-Einstein condensate was loaded into a one-dimensional optical lattice with …

We interpret the recently observed spatial domain formation in spin-1 atomic condensates
as a result of dynamical instability. Within the mean field theory, a homogeneous …

Periodically driven quantum systems are currently explored in view of realizing novel many-
body phases of matter. This approach is particularly promising in gases of ultracold atoms …

We investigate the stability of supercurrents in a Bose-Einstein condensate with one-
dimensional spin-orbit and Raman couplings. The consequence of the lack of Galilean …