The combination of different kinds of ultracold gases constitutes a novel powerful
experimental framework for the investigation of a variety of physical problems. We illustrate …

Topological defects and smooth excitations determine the properties of systems showing
collective order. We introduce a generic non-singular field theory that comprehensively …

We present experimental and theoretical results on formation of quantum vortices in a laser
beam propagating in a nonlinear medium. Topological constrains richer than the mere …

We study the motion of a superfluid vortex in condensates having different background
density profiles, ranging from parabolic to uniform. The resulting effective point-vortex model …

Ghost vortices constitute an elusive class of topological excitations in quantum fluids since
the relevant phase singularities fall within regions where the superfluid density is almost …

The structures of multiply quantized vortices (MQVs) of an equal-population atomic Fermi
superfluid in a rotating spherical bubble trap approximated as a thin shell are analyzed by …

Multiply quantized vortices (MQVs) within single-component Bose-Einstein condensates are
unstable and decay rapidly. We show that MQVs can be stabilized by adding a small …

We study a superfluid in a planar annulus hosting vortices with massive cores. An analytical
point-vortex model shows that the massive vortices may perform radial oscillations on top of …

We study the motion of superfluid vortices with filled massive cores. Previous point-vortex
models already pointed out the impact of the core mass on the vortex dynamical properties …

A bstract The temperature effect on the linear instability and the splitting process of a doubly
quantized vortex is studied. Using the linear perturbation theory to calculate out the quasi …