Quantum phase transitions are strongly relevant in a number of fields, ranging from
condensed matter to cold atom physics and quantum field theory. This book, now in its …

Superconductivity in strongly correlated systems is a remarkable phenomenon that attracts a
huge interest. The study of this problem is relevant for materials such as the high T c oxides …

Motivated by the recent experimental realization of a candidate to the Fulde–Ferrell (FF) and
the Larkin–Ovchinnikov (LO) states in one-dimensional (1D) atomic Fermi gases, we study …

In multiband systems, electrons from different orbitals coexist at the Fermi surface. An
attractive interaction among these quasiparticles gives rise to interband or hybrid pairs …

In multi-band metals quasi-particles arising from different atomic orbitals coexist at a
common Fermi surface. Superconductivity in these materials may appear due to interactions …

In physical systems, coupling to the environment gives rise to dissipation and decoherence.
For nanoscopic materials, this may be a determining factor of their physical behaviour …

We study some important problems related to the transport properties of many body systems.
It is divided in three parts, each one focusing in a specific topic. We obtain relevant results …

Using the method of Green functions equation of motion we considered the three
dimensional Anderson lattice model with attractive interaction between f-electrons. We …

We study the possibility of coexistence in a two component fermionic system of a superfluid
state with a metallic-like state with gapless excitations at a Fermi surface. We consider a two …