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 …

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 …

In this paper, we mainly review recent results on mathematical theory and numerical
methods for Bose-Einstein condensation (BEC), based on the Gross-Pitaevskii equation …

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 …

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 …

We investigate the zero-temperature properties of an impurity particle interacting with a Bose-
Einstein condensate (BEC), using a variational wave function that includes up to two …

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 develop a systematic perturbation theory for the quasiparticle properties of a single
impurity immersed in a Bose-Einstein condensate. Analytical results are derived for the …

We monitor the correlated quench induced dynamical dressing of a spinor impurity
repulsively interacting with a Bose-Einstein condensate. Inspecting the temporal evolution of …

We use a class of variational wave functions to study the properties of an impurity in a Bose-
Einstein condensate, ie, the Bose polaron. The impurity interacts with the condensate …