Now showing items 1-2 of 2

    • Ionic polaron in a Bose-Einstein condensate 

      Astrakharchik, Grigori; Schmidt, Richard (2021-05-11)
      Article
      Open Access
      The presence of strong interactions in a many-body quantum system can lead to a variety of exotic effects. Here we show that even in a comparatively simple setup consisting of a charged impurity in a weakly interacting ...
    • Mobile impurity in a Bose-Einstein condensate and the orthogonality catastrophe 

      Guenther, Nils Eric; Schmidt, Richard; Bruun, Georg M.; Gurarie, Victor; Massignan, Pietro Alberto (American Physical Society, 2021-01-01)
      Article
      Open Access
      We analyze the properties of an impurity in a dilute Bose-Einstein condensate (BEC). First the quasiparticle residue of a static impurity in an ideal BEC is shown to vanish with increasing particle number as a stretched ...