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 …

In flat-band systems, destructive interference leads to the localization of noninteracting
particles and forbids their motion through the lattice. However, in the presence of …

We study a system of a few ultracold bosons loaded into states with orbital angular
momentum l= 1 of a one-dimensional staggered lattice of rings. Local eigenstates with …

The XYZ model is an integrable spin chain which has an infinite set of conserved charges,
but it lacks a global $ U (1) $-symmetry. We consider the current operators, which describe …

Systems of interacting fermions can give rise to ground states whose correlations become
effectively free-fermion-like in the thermodynamic limit, as shown by Baxter for a class of …

We examine how the magnetic susceptibility obtained by the quench experiment on isolated
quantum systems is related to the isothermal and adiabatic susceptibilities defined in …

Recently, variational quantum algorithms have received much attention, having the potential
to be successfully run on near-term quantum computers. In this thesis, we study these …

Since the first experimental realization of a Bose-Einstein condensate (BEC) in 1995 [1–3],
predicted by A. Einstein 70 years earlier, the study of BECs has constituted a whole new …

Els àtoms ultrafreds són una excel· lent plataforma per a l'estudi de fases fortament
correlacionades, fases topològiques, termalització quàntica i per a la implementació de …