Quantum atomic and molecular gases are flexible systems for studies of fundamental many-
body physics. They have traditionally been produced in harmonic electromagnetic traps and …

Atomtronics deals with matter-wave circuits of ultracold atoms manipulated through
magnetic or laser-generated guides with different shapes and intensities. In this way, new …

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 …

In superfluid systems several sound modes can be excited, such as, for example, first and
second sound in liquid helium. Here, we excite running and standing waves in a uniform two …

Most experimental observations of solitons are limited to one-dimensional (1D) situations,
where they are naturally stable. For instance, in 1D cold Bose gases, they exist for any …

The optical properties of randomly positioned, resonant scatterers is a fundamentally difficult
problem to address across a wide range of densities and geometries. We investigate it …

Experimental platforms based on ultracold atomic gases have significantly advanced the
quantum simulation of complex systems, yet the exploration of phenomena driven by long …

A fluid is said to be scale invariant when its interaction and kinetic energies have the same
scaling in a dilation operation. In association with the more general conformal invariance …

We study a two dimensional (2D) system of interacting quantum bosons, subjected to a
continuous periodic potential in one direction. The correlation of such system exhibits a …

We investigate the formation of quantum droplets at finite temperature in attractive Bose
mixtures subject to a strong transverse harmonic confinement. By means of exact path …