Speaker
Krzysztof Jachymski
(University of Warsaw)
Description
The presence of strong interactions in a many-body quantum system can lead to a variety of exotic effects. For the case of a charged impurity in a weakly interacting bosonic medium the competition of length scales can give rise to a highly correlated mesoscopic state. Its properties are vastly different from neutral quantum impurities, with a large density increase close to the ion location and a huge effective mass. An experimental study of these effects requires reaching very low temperatures and controlling the ion-atom interaction strength. The combination of Ba ions and Li atoms features plenty of Feshbach resonances which can allow to enter this regime.
Primary author
Krzysztof Jachymski
(University of Warsaw)
