Quantized vortices are a prototypical feature of superfluidity that have been observed in
multiple quantum gas experiments. But the occurrence of vortices in dipolar quantum gases …

We present a theoretical analysis of some unexplored aspects of relaxed Bose–Einstein
condensate dark matter (BECDM) haloes. This type of ultralight bosonic scalar field dark …

Turbulence is characterized by a large number of degrees of freedom, distributed over
several length scales, that result in a disordered state of a fluid. The field of quantum …

In three-dimensional hydrodynamic turbulence forced at large length scales, a constant
energy flux Π u flows from large scales to intermediate scales, and then to small scales. It is …

A central concept in the modern understanding of turbulence is the existence of cascades of
excitations from large to small length scales, or vice versa. This concept was introduced in …

Theoretical studies on wave turbulence predict that a purely classical system of random
waves can exhibit a process of condensation, which originates in the singularity of the …

This book introduces the theoretical description and properties of quantum fluids. The focus
is on gaseous atomic Bose–Einstein condensates and, to a minor extent, superfluid helium …

We explore, both experimentally and theoretically, the response of an elongated Bose-
Einstein condensate to modulated interactions. We identify two distinct regimes differing in …

We show that fuzzy dark matter haloes exhibit spatial differentiation in the coherence of the
field configuration, ranging from completely coherent in the central solitonic core to …

Reconnections and interactions of filamentary coherent structures play a fundamental role in
the dynamics of fluids, redistributing energy and helicity among the length scales and …