---
_id: '417'
abstract:
- lang: eng
  text: 'We introduce a Diagrammatic Monte Carlo (DiagMC) approach to complex molecular
    impurities with rotational degrees of freedom interacting with a many-particle
    environment. The treatment is based on the diagrammatic expansion that merges
    the usual Feynman diagrams with the angular momentum diagrams known from atomic
    and nuclear structure theory, thereby incorporating the non-Abelian algebra inherent
    to quantum rotations. Our approach works at arbitrary coupling, is free of systematic
    errors and of finite size effects, and naturally provides access to the impurity
    Green function. We exemplify the technique by obtaining an all-coupling solution
    of the angulon model, however, the method is quite general and can be applied
    to a broad variety of quantum impurities possessing angular momentum degrees of
    freedom. '
article_number: '165301'
article_processing_charge: No
arxiv: 1
author:
- first_name: Giacomo
  full_name: Bighin, Giacomo
  id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87
  last_name: Bighin
  orcid: 0000-0001-8823-9777
- first_name: Timur
  full_name: Tscherbul, Timur
  last_name: Tscherbul
- first_name: Mikhail
  full_name: Lemeshko, Mikhail
  id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
  last_name: Lemeshko
  orcid: 0000-0002-6990-7802
citation:
  ama: Bighin G, Tscherbul T, Lemeshko M. Diagrammatic Monte Carlo approach to rotating
    molecular impurities. <i>Physical Review Letters</i>. 2018;121(16). doi:<a href="https://doi.org/10.1103/PhysRevLett.121.165301">10.1103/PhysRevLett.121.165301</a>
  apa: Bighin, G., Tscherbul, T., &#38; Lemeshko, M. (2018). Diagrammatic Monte Carlo
    approach to rotating molecular impurities. <i>Physical Review Letters</i>. American
    Physical Society. <a href="https://doi.org/10.1103/PhysRevLett.121.165301">https://doi.org/10.1103/PhysRevLett.121.165301</a>
  chicago: Bighin, Giacomo, Timur Tscherbul, and Mikhail Lemeshko. “Diagrammatic Monte
    Carlo Approach to Rotating Molecular Impurities.” <i>Physical Review Letters</i>.
    American Physical Society, 2018. <a href="https://doi.org/10.1103/PhysRevLett.121.165301">https://doi.org/10.1103/PhysRevLett.121.165301</a>.
  ieee: G. Bighin, T. Tscherbul, and M. Lemeshko, “Diagrammatic Monte Carlo approach
    to rotating molecular impurities,” <i>Physical Review Letters</i>, vol. 121, no.
    16. American Physical Society, 2018.
  ista: Bighin G, Tscherbul T, Lemeshko M. 2018. Diagrammatic Monte Carlo approach
    to rotating molecular impurities. Physical Review Letters. 121(16), 165301.
  mla: Bighin, Giacomo, et al. “Diagrammatic Monte Carlo Approach to Rotating Molecular
    Impurities.” <i>Physical Review Letters</i>, vol. 121, no. 16, 165301, American
    Physical Society, 2018, doi:<a href="https://doi.org/10.1103/PhysRevLett.121.165301">10.1103/PhysRevLett.121.165301</a>.
  short: G. Bighin, T. Tscherbul, M. Lemeshko, Physical Review Letters 121 (2018).
date_created: 2018-12-11T11:46:22Z
date_published: 2018-10-16T00:00:00Z
date_updated: 2025-04-15T07:59:27Z
day: '16'
department:
- _id: MiLe
doi: 10.1103/PhysRevLett.121.165301
external_id:
  arxiv:
  - '1803.07990'
fulldoi: https://doi.org/10.1103/PhysRevLett.121.165301
intvolume: '       121'
issue: '16'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/1803.07990
month: '10'
oa: 1
oa_version: Preprint
project:
- _id: 26031614-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: P29902
  name: Quantum rotations in the presence of a many-body environment
publication: Physical Review Letters
publication_status: published
publisher: American Physical Society
publist_id: '8025'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Diagrammatic Monte Carlo approach to rotating molecular impurities
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 121
year: '2018'
...