Hybrid systems of laser-cooled trapped ions and ultracold atoms combined in a single
experimental setup have recently emerged as a new platform for fundamental research in …

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 …

The problem of an impurity particle moving through a bosonic medium plays a fundamental
role in physics. However, the canonical scenario of a mobile impurity immersed in a Bose …

When an impurity is immersed in a Bose-Einstein condensate, impurity-boson interactions
are expected to dress the impurity into a quasiparticle, the Bose polaron. We superimpose …

The emergence of quasiparticles in interacting matter represents one of the cornerstones of
modern physics. However, in the vicinity of a quantum critical point, the existence of …

A recent rejuvenation of experimental and theoretical interest in the physics of few-body
systems has provided deep, fundamental insights into a broad range of problems. Few-body …

We study the properties of the Bose polaron, an impurity strongly interacting with a Bose-
Einstein condensate, using a field-theoretic approach and make predictions for the spectral …

Mobile impurities in a Bose-Einstein condensate form quasiparticles called polarons. Here,
we show that two such polarons can bind to form a bound bipolaron state. Its emergence is …

We analyze the dynamics of Bose polarons in the vicinity of a Feshbach resonance between
the impurity and host atoms. We compute the radio-frequency absorption spectra for the …

We investigate the properties of an impurity immersed in a dilute Bose gas at zero
temperature using quantum Monte Carlo methods. The interactions between bosons are …