After decades of improvements in cooling techniques of several atomic species and in
finding methods for the achievement of stable quantum mixtures, the field is now ready for …

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 …

When mobile impurities are introduced and coupled to a Fermi sea, new quasiparticles
known as Fermi polarons are formed. There are two interesting, yet drastically different …

We study the properties of an impurity immersed in a weakly interacting Bose gas, ie, of a
Bose polaron. In the perturbatively tractable limit of weak impurity-boson interactions many …

We analyze the properties of an impurity in a dilute Bose-Einstein condensate (BEC). The
quasiparticle residue of a static impurity in an ideal BEC is known to vanish exponentially …

We present a systematic study of a mobile impurity immersed in a three-dimensional Fermi
sea of fermions at finite temperature, by using the standard non-self-consistent many-body T …

An impurity particle interacting with a Bose-Einstein condensate (BEC) leads to the
formation of a quasiparticle known as the Bose polaron. We investigate the properties of the …

We study the properties of a single impurity in a dilute Bose gas, a Bose polaron, using the
functional renormalization group. We use an ansatz for the effective action motivated by a …

We investigate the behavior of a mobile spin-1/2 impurity atom immersed in a Fermi gas,
where the interacting spin-↑ and noninteracting spin-↓ states of the impurity are Rabi …

The notion of a polaron, originally introduced in the context of electrons in ionic lattices,
helps us to understand how a quantum impurity behaves when being immersed in and …