Symmetries play a crucial role in understanding phases of matter and the transitions
between them. Theoretical investigations of quantum models with SU (N) symmetry have …

Counterflow superfluidity is an anomalous quantum phase that was predicted two decades
ago in the context of a two-component Bose–Hubbard model. In this phase, although both …

We consider a model of free fermions in a ladder geometry coupled to a non-uniform cavity
mode via Peierls substitution. Since the cavity mode generates a magnetic field, no-go …

Persistent currents flowing in spatially closed tracks define one of the most iconic concepts
in mesoscopic physics. They have been studied in solid-state platforms such as superfluids …

A bosonic Creutz–Hubbard ladder is studied by solving the interacting Bose–Hubbard
model, with the help of exact diagonalization method. Under certain parameters, a single …

We explore a two-dimensional Hubbard model adapted to host altermagnetic states.
Utilizing Hartree-Fock (HF) and dynamical mean field theory (DMFT), we uncover that the …

We determine the ground states and excitation spectra of the paradigmatic four-flavor
Heisenberg model with nearest-and next-nearest-neighbor exchange couplings on the …

In this paper, we investigate the XY model in the presence of an additional potential term
that independently tunes the vortex fugacity favouring their nucleation. By increasing the …

The characterisation of broken symmetry phases (BSP) in correlated quantum systems
remains a formidable challenge for many-body theory. In fact, determining the precise …

The general framework of this thesis is the study of multicomponent strongly interacting
fermions moving on a lattice. These are defined as systems of many particles obeying the …