---
res:
  bibo_abstract:
  - We develop a microscopic theory describing a quantum impurity whose rotational
    degree of freedom is coupled to a many-particle bath. We approach the problem
    by introducing the concept of an “angulon”—a quantum rotor dressed by a quantum
    field—and reveal its quasiparticle properties using a combination of variational
    and diagrammatic techniques. Our theory predicts renormalization of the impurity
    rotational structure, such as that observed in experiments with molecules in superfluid
    helium droplets, in terms of a rotational Lamb shift induced by the many-particle
    environment. Furthermore, we discover a rich many-body-induced fine structure,
    emerging in rotational spectra due to a redistribution of angular momentum within
    the quantum many-body system.@eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Richard
      foaf_name: Schmidt, Richard
      foaf_surname: Schmidt
  - foaf_Person:
      foaf_givenName: Mikhail
      foaf_name: Lemeshko, Mikhail
      foaf_surname: Lemeshko
      foaf_workInfoHomepage: http://www.librecat.org/personId=37CB05FA-F248-11E8-B48F-1D18A9856A87
    orcid: 0000-0002-6990-7802
  bibo_doi: 10.1103/PhysRevLett.114.203001
  bibo_issue: '20'
  bibo_volume: 114
  dct_date: 2015^xs_gYear
  dct_identifier:
  - UT:000354969900003
  dct_language: eng
  dct_publisher: American Physical Society@
  dct_title: Rotation of quantum impurities in the presence of a many-body environment@
...