This review describes the field of Bose polarons, arising when mobile impurities are
immersed into a bosonic quantum gas. The latter can be realized by a Bose-Einstein …

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 present a systematic geometric framework to study closed quantum systems based on
suitably chosen variational families. For the purpose of (A) real time evolution,(B) excitation …

Mobile impurity atoms immersed in Bose–Einstein condensates provide a new platform for
exploring Bose polarons. Recent experimental advances in the field of ultracold atoms make …

We consider the ground-state properties of an impurity particle (“polaron”) resonantly
interacting with a Bose-Einstein condensate (BEC). Focusing on the equal-mass system, we …

When a mobile impurity interacts with a many-body system, such as a phonon bath, a
polaron is formed. Despite the importance of the polaron problem for a wide range of …

We use a nonperturbative renormalization group approach to develop a unified picture of
the Bose polaron problem, where a mobile impurity is strongly interacting with a surrounding …

Since the Efimov effect was introduced, a detailed theoretical understanding of Efimov
physics has been developed in the few-body context. However, it has proven challenging to …

We study the dynamics of a quantum impurity immersed in a Bose-Einstein condensate as
an open quantum system in the framework of the quantum Brownian motion model. We …

The Frehlich polaron model describes a ubiquitous class of problems concerned with
understanding the properties of a single mobile particle interacting with a bosonic reservoir …