In this review, we discuss the properties of a few impurity atoms immersed in a gas of
ultracold fermions—the so-called Fermi polaron problem. On one hand, this many-body …

An overview of quantum phase transitions (QPTs) in metallic ferromagnets, discussing both
experimental and theoretical aspects, is given. These QPTs can be classified with respect to …

Polaron quasiparticles are formed when a mobile impurity is coupled to the elementary
excitations of a many-particle background. In the field of ultracold atoms, the study of the …

Ferromagnetism is a manifestation of strong repulsive interactions between itinerant
fermions in condensed matter. Whether short-ranged repulsion alone is sufficient to stabilize …

We exploit a time-resolved pump-probe spectroscopic technique to study the out-of-
equilibrium dynamics of an ultracold two-component Fermi gas, selectively quenched to …

We report the creation and the study of the stability of a repulsive quasihomogeneous spin-
1/2 Fermi gas with contact interactions. For the range of scattering lengths a explored, the …

Ultracold atomic Fermi gases have been a popular topic of research, with attention being
paid recently to two-dimensional (2D) gases. In this work, we perform T= 0 ab initio diffusion …

Single-component ultracold atomic Fermi gases are usually described using noninteracting
many-fermion models. However, recent experiments reached a regime where p-wave …

We observe that the diffusive spin current in a strongly interacting degenerate Fermi gas of K
40 precesses about the local magnetization. As predicted by Leggett and Rice, precession is …

A system of two species of fermions of different mass confined in a one-dimensional
harmonic trap is studied with an exact diagonalization approach. It is shown that a mass …