---
_id: '604'
abstract:
- lang: eng
  text: In several settings of physics and chemistry one has to deal with molecules
    interacting with some kind of an external environment, be it a gas, a solution,
    or a crystal surface. Understanding molecular processes in the presence of such
    a many-particle bath is inherently challenging, and usually requires large-scale
    numerical computations. Here, we present an alternative approach to the problem,
    based on the notion of the angulon quasiparticle. We show that molecules rotating
    inside superfluid helium nanodroplets and Bose–Einstein condensates form angulons,
    and therefore can be described by straightforward solutions of a simple microscopic
    Hamiltonian. Casting the problem in the language of angulons allows us not only
    to greatly simplify it, but also to gain insights into the origins of the observed
    phenomena and to make predictions for future experimental studies.
alternative_title:
- Theoretical and Computational Chemistry Series
author:
- first_name: Mikhail
  full_name: Lemeshko, Mikhail
  id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
  last_name: Lemeshko
  orcid: 0000-0002-6990-7802
- first_name: Richard
  full_name: Schmidt, Richard
  last_name: Schmidt
citation:
  ama: 'Lemeshko M, Schmidt R. Molecular impurities interacting with a many-particle
    environment: From ultracold gases to helium nanodroplets. In: Dulieu O, Osterwalder
    A, eds. <i>Cold Chemistry: Molecular Scattering and Reactivity Near Absolute Zero
    </i>. Vol 11. Theoretical and Computational Chemistry Series. The Royal Society
    of Chemistry; 2017:444-495. doi:<a href="https://doi.org/10.1039/9781782626800-00444">10.1039/9781782626800-00444</a>'
  apa: 'Lemeshko, M., &#38; Schmidt, R. (2017). Molecular impurities interacting with
    a many-particle environment: From ultracold gases to helium nanodroplets. In O.
    Dulieu &#38; A. Osterwalder (Eds.), <i>Cold Chemistry: Molecular Scattering and
    Reactivity Near Absolute Zero </i> (Vol. 11, pp. 444–495). The Royal Society of
    Chemistry. <a href="https://doi.org/10.1039/9781782626800-00444">https://doi.org/10.1039/9781782626800-00444</a>'
  chicago: 'Lemeshko, Mikhail, and Richard Schmidt. “Molecular Impurities Interacting
    with a Many-Particle Environment: From Ultracold Gases to Helium Nanodroplets.”
    In <i>Cold Chemistry: Molecular Scattering and Reactivity Near Absolute Zero </i>,
    edited by Oliver Dulieu and Andreas Osterwalder, 11:444–95. Theoretical and Computational
    Chemistry Series. The Royal Society of Chemistry, 2017. <a href="https://doi.org/10.1039/9781782626800-00444">https://doi.org/10.1039/9781782626800-00444</a>.'
  ieee: 'M. Lemeshko and R. Schmidt, “Molecular impurities interacting with a many-particle
    environment: From ultracold gases to helium nanodroplets,” in <i>Cold Chemistry:
    Molecular Scattering and Reactivity Near Absolute Zero </i>, vol. 11, O. Dulieu
    and A. Osterwalder, Eds. The Royal Society of Chemistry, 2017, pp. 444–495.'
  ista: 'Lemeshko M, Schmidt R. 2017.Molecular impurities interacting with a many-particle
    environment: From ultracold gases to helium nanodroplets. In: Cold Chemistry:
    Molecular Scattering and Reactivity Near Absolute Zero . Theoretical and Computational
    Chemistry Series, vol. 11, 444–495.'
  mla: 'Lemeshko, Mikhail, and Richard Schmidt. “Molecular Impurities Interacting
    with a Many-Particle Environment: From Ultracold Gases to Helium Nanodroplets.”
    <i>Cold Chemistry: Molecular Scattering and Reactivity Near Absolute Zero </i>,
    edited by Oliver Dulieu and Andreas Osterwalder, vol. 11, The Royal Society of
    Chemistry, 2017, pp. 444–95, doi:<a href="https://doi.org/10.1039/9781782626800-00444">10.1039/9781782626800-00444</a>.'
  short: 'M. Lemeshko, R. Schmidt, in:, O. Dulieu, A. Osterwalder (Eds.), Cold Chemistry:
    Molecular Scattering and Reactivity Near Absolute Zero , The Royal Society of
    Chemistry, 2017, pp. 444–495.'
date_created: 2018-12-11T11:47:27Z
date_published: 2017-12-14T00:00:00Z
date_updated: 2021-01-12T08:05:50Z
day: '14'
department:
- _id: MiLe
doi: 10.1039/9781782626800-00444
editor:
- first_name: Oliver
  full_name: Dulieu, Oliver
  last_name: Dulieu
- first_name: Andreas
  full_name: Osterwalder, Andreas
  last_name: Osterwalder
intvolume: '        11'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/1703.06753
month: '12'
oa: 1
oa_version: Submitted Version
page: 444 - 495
publication: 'Cold Chemistry: Molecular Scattering and Reactivity Near Absolute Zero '
publication_identifier:
  issn:
  - '20413181'
publication_status: published
publisher: The Royal Society of Chemistry
publist_id: '7201'
quality_controlled: '1'
scopus_import: 1
series_title: Theoretical and Computational Chemistry Series
status: public
title: 'Molecular impurities interacting with a many-particle environment: From ultracold
  gases to helium nanodroplets'
type: book_chapter
user_id: 4435EBFC-F248-11E8-B48F-1D18A9856A87
volume: 11
year: '2017'
...