Bogoliubov theory for excitations in Bose-Einstein condensates was formulated over 50
years ago to qualitatively explain strongly interacting superfluids. Quantitative experimental …

We experimentally study the influence of dissipation on the driven Dicke quantum phase
transition, realized by coupling external degrees of freedom of a Bose–Einstein condensate …

We report on measurements of the excitation spectrum of a strongly interacting Bose-
Einstein condensate. A magnetic-field Feshbach resonance is used to tune atom-atom …

The field of ultracold atomic physics has developed rapidly during the last two decades, and
currently encompasses a broad range of topics in physics, with a variety of important …

In the expanding universe, relativistic scalar fields are thought to be attenuated by “Hubble
friction,” which results from the dilation of the underlying spacetime metric. By contrast, in a …

We investigate numerically simulated collisions between experimentally realistic Bose-
Einstein condensate wave packets, within a regime where highly populated scattering …

The precision of most compact inertial sensing schemes using trapped-and guided-atom
interferometers has been limited by uncontrolled phase errors caused by trap** potentials …

The Doppler effect, the shift in the frequency of sound due to motion, is present in both
classical gases and quantum superfluids. Here, we perform an in situ, minimally destructive …

We apply the classical field method to simulate the production of correlated atoms during the
collision of two Bose-Einstein condensates. Our nonperturbative method includes the effect …

We describe repulsively interacting Bose-Einstein condensates in spatially correlated
disorder potentials of arbitrary dimension. The first effect of disorder is to deform the mean …