@article{5886,
  abstract     = {Problems involving quantum impurities, in which one or a few particles are interacting with a macroscopic environment, represent a pervasive paradigm, spanning across atomic, molecular, and condensed-matter physics. In this paper we introduce new variational approaches to quantum impurities and apply them to the Fröhlich polaron–a quasiparticle formed out of an electron (or other point-like impurity) in a polar medium, and to the angulon–a quasiparticle formed out of a rotating molecule in a bosonic bath. We benchmark these approaches against established theories, evaluating their accuracy as a function of the impurity-bath coupling.},
  author       = {Li, Xiang and Bighin, Giacomo and Yakaboylu, Enderalp and Lemeshko, Mikhail},
  issn         = {00268976},
  journal      = {Molecular Physics},
  publisher    = {Taylor and Francis},
  title        = {{Variational approaches to quantum impurities: from the Fröhlich polaron to the angulon}},
  doi          = {10.1080/00268976.2019.1567852},
  year         = {2019},
}