Communications Physics (May 2021)

Ionic polaron in a Bose-Einstein condensate

  • Grigory E. Astrakharchik,
  • Luis A. Peña Ardila,
  • Richard Schmidt,
  • Krzysztof Jachymski,
  • Antonio Negretti

DOI
https://doi.org/10.1038/s42005-021-00597-1
Journal volume & issue
Vol. 4, no. 1
pp. 1 – 8

Abstract

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An impurity introduced to a many-body quantum environment gets dressed by excitations and it is of a particular interest to understand the limits of the quasi-particle description. The authors theoretically and numerically study an ionic impurity immersed in a weakly interacting gas of bosonic atoms and demonstrate the existence of two main phases of a polaronic regime for weak interactions, and a strongly correlated state with many bosons bound to the ion.