---
_id: '11590'
abstract:
- lang: eng
  text: 'We investigate the ground-state properties of weakly repulsive one-dimensional
    bosons in the presence of an attractive zero-range impurity potential. First,
    we derive mean-field solutions to the problem on a finite ring for the two asymptotic
    cases: (i) all bosons are bound to the impurity and (ii) all bosons are in a scattering
    state. Moreover, we derive the critical line that separates these regimes in the
    parameter space. In the thermodynamic limit, this critical line determines the
    maximum number of bosons that can be bound by the impurity potential, forming
    an artificial atom. Second, we validate the mean-field results using the flow
    equation approach and the multi-layer multi-configuration time-dependent Hartree
    method for atomic mixtures. While beyond-mean-field effects destroy long-range
    order in the Bose gas, the critical boson number is unaffected. Our findings are
    important for understanding such artificial atoms in low-density Bose gases with
    static and mobile impurities.'
acknowledgement: This work has received funding from the DFG Project No. 413495248
  [VO 2437/1-1] (FB, H-WH, AGV) and European Union's Horizon 2020 research and innovation
  programme under the Marie Skĺodowska-Curie Grant Agreement No. 754411 (AGV). ML
  acknowledges support by the European Research Council (ERC) Starting Grant No. 801770
  (ANGULON). SIM acknowledges support from the NSF through a grant for ITAMP at Harvard
  University.
article_number: '063036'
article_processing_charge: No
article_type: original
author:
- first_name: Fabian
  full_name: Brauneis, Fabian
  last_name: Brauneis
- first_name: Timothy G.
  full_name: Backert, Timothy G.
  last_name: Backert
- first_name: Simeon I.
  full_name: Mistakidis, Simeon I.
  last_name: Mistakidis
- first_name: Mikhail
  full_name: Lemeshko, Mikhail
  id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
  last_name: Lemeshko
  orcid: 0000-0002-6990-7802
- first_name: Hans Werner
  full_name: Hammer, Hans Werner
  last_name: Hammer
- first_name: Artem
  full_name: Volosniev, Artem
  id: 37D278BC-F248-11E8-B48F-1D18A9856A87
  last_name: Volosniev
  orcid: 0000-0003-0393-5525
citation:
  ama: Brauneis F, Backert TG, Mistakidis SI, Lemeshko M, Hammer HW, Volosniev A.
    Artificial atoms from cold bosons in one dimension. <i>New Journal of Physics</i>.
    2022;24(6). doi:<a href="https://doi.org/10.1088/1367-2630/ac78d8">10.1088/1367-2630/ac78d8</a>
  apa: Brauneis, F., Backert, T. G., Mistakidis, S. I., Lemeshko, M., Hammer, H. W.,
    &#38; Volosniev, A. (2022). Artificial atoms from cold bosons in one dimension.
    <i>New Journal of Physics</i>. IOP Publishing. <a href="https://doi.org/10.1088/1367-2630/ac78d8">https://doi.org/10.1088/1367-2630/ac78d8</a>
  chicago: Brauneis, Fabian, Timothy G. Backert, Simeon I. Mistakidis, Mikhail Lemeshko,
    Hans Werner Hammer, and Artem Volosniev. “Artificial Atoms from Cold Bosons in
    One Dimension.” <i>New Journal of Physics</i>. IOP Publishing, 2022. <a href="https://doi.org/10.1088/1367-2630/ac78d8">https://doi.org/10.1088/1367-2630/ac78d8</a>.
  ieee: F. Brauneis, T. G. Backert, S. I. Mistakidis, M. Lemeshko, H. W. Hammer, and
    A. Volosniev, “Artificial atoms from cold bosons in one dimension,” <i>New Journal
    of Physics</i>, vol. 24, no. 6. IOP Publishing, 2022.
  ista: Brauneis F, Backert TG, Mistakidis SI, Lemeshko M, Hammer HW, Volosniev A.
    2022. Artificial atoms from cold bosons in one dimension. New Journal of Physics.
    24(6), 063036.
  mla: Brauneis, Fabian, et al. “Artificial Atoms from Cold Bosons in One Dimension.”
    <i>New Journal of Physics</i>, vol. 24, no. 6, 063036, IOP Publishing, 2022, doi:<a
    href="https://doi.org/10.1088/1367-2630/ac78d8">10.1088/1367-2630/ac78d8</a>.
  short: F. Brauneis, T.G. Backert, S.I. Mistakidis, M. Lemeshko, H.W. Hammer, A.
    Volosniev, New Journal of Physics 24 (2022).
date_created: 2022-07-17T22:01:55Z
date_published: 2022-06-01T00:00:00Z
date_updated: 2025-04-14T07:43:58Z
day: '01'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1088/1367-2630/ac78d8
ec_funded: 1
external_id:
  isi:
  - '000818530000001'
file:
- access_level: open_access
  checksum: dc67b60f2e50e9ef2bd820ca0d7333d2
  content_type: application/pdf
  creator: dernst
  date_created: 2022-07-18T06:33:13Z
  date_updated: 2022-07-18T06:33:13Z
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file_date_updated: 2022-07-18T06:33:13Z
has_accepted_license: '1'
intvolume: '        24'
isi: 1
issue: '6'
language:
- iso: eng
license: https://creativecommons.org/licenses/by/4.0/
month: '06'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '754411'
  name: ISTplus - Postdoctoral Fellowships
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '801770'
  name: 'Angulon: physics and applications of a new quasiparticle'
publication: New Journal of Physics
publication_identifier:
  issn:
  - 1367-2630
publication_status: published
publisher: IOP Publishing
quality_controlled: '1'
scopus_import: '1'
status: public
title: Artificial atoms from cold bosons in one dimension
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 24
year: '2022'
...