---
_id: '13963'
abstract:
- lang: eng
  text: The many-body localization (MBL) proximity effect is an intriguing phenomenon
    where a thermal bath localizes due to the interaction with a disordered system.
    The interplay of thermal and nonergodic behavior in these systems gives rise to
    a rich phase diagram, whose exploration is an active field of research. In this
    paper, we study a bosonic Hubbard model featuring two particle species representing
    the bath and the disordered system. Using state-of-the-art numerical techniques,
    we investigate the dynamics of the model in different regimes, based on which
    we obtain a tentative phase diagram as a function of coupling strength and bath
    size. When the bath is composed of a single particle, we observe clear signatures
    of a transition from an MBL proximity effect to a delocalized phase. Increasing
    the bath size, however, its thermalizing effect becomes stronger and eventually
    the whole system delocalizes in the range of moderate interaction strengths studied.
    In this regime, we characterize particle transport, revealing diffusive behavior
    of the originally localized bosons.
acknowledgement: "We thank A. A. Michailidis and A. Mirlin for insightful discussions.
  P.B., M.L., and M.S. acknowledge support by the European Research Council (ERC)
  under the European Union’s Horizon 2020 research and innovation program (Grant Agreement
  No. 850899). D.A. was\r\nsupported by the European Research Council (ERC) under
  the European Union’s Horizon 2020 research and innovation program (Grant Agreement
  No. 864597) and by the Swiss National Science Foundation. P.B., M.L., and M.S. acknowledge
  PRACE for awarding us access to Joliot-Curie at GENCI@CEA, France, where the TEBD
  simulations were performed. The TEBD simulations were performed using the ITensor
  library [60]."
article_number: '054201'
article_processing_charge: Yes (in subscription journal)
article_type: original
arxiv: 1
author:
- first_name: Pietro
  full_name: Brighi, Pietro
  id: 4115AF5C-F248-11E8-B48F-1D18A9856A87
  last_name: Brighi
  orcid: 0000-0002-7969-2729
- first_name: Marko
  full_name: Ljubotina, Marko
  id: F75EE9BE-5C90-11EA-905D-16643DDC885E
  last_name: Ljubotina
  orcid: 0000-0003-0038-7068
- first_name: Dmitry A.
  full_name: Abanin, Dmitry A.
  last_name: Abanin
- first_name: Maksym
  full_name: Serbyn, Maksym
  id: 47809E7E-F248-11E8-B48F-1D18A9856A87
  last_name: Serbyn
  orcid: 0000-0002-2399-5827
citation:
  ama: Brighi P, Ljubotina M, Abanin DA, Serbyn M. Many-body localization proximity
    effect in a two-species bosonic Hubbard model. <i>Physical Review B</i>. 2023;108(5).
    doi:<a href="https://doi.org/10.1103/physrevb.108.054201">10.1103/physrevb.108.054201</a>
  apa: Brighi, P., Ljubotina, M., Abanin, D. A., &#38; Serbyn, M. (2023). Many-body
    localization proximity effect in a two-species bosonic Hubbard model. <i>Physical
    Review B</i>. American Physical Society. <a href="https://doi.org/10.1103/physrevb.108.054201">https://doi.org/10.1103/physrevb.108.054201</a>
  chicago: Brighi, Pietro, Marko Ljubotina, Dmitry A. Abanin, and Maksym Serbyn. “Many-Body
    Localization Proximity Effect in a Two-Species Bosonic Hubbard Model.” <i>Physical
    Review B</i>. American Physical Society, 2023. <a href="https://doi.org/10.1103/physrevb.108.054201">https://doi.org/10.1103/physrevb.108.054201</a>.
  ieee: P. Brighi, M. Ljubotina, D. A. Abanin, and M. Serbyn, “Many-body localization
    proximity effect in a two-species bosonic Hubbard model,” <i>Physical Review B</i>,
    vol. 108, no. 5. American Physical Society, 2023.
  ista: Brighi P, Ljubotina M, Abanin DA, Serbyn M. 2023. Many-body localization proximity
    effect in a two-species bosonic Hubbard model. Physical Review B. 108(5), 054201.
  mla: Brighi, Pietro, et al. “Many-Body Localization Proximity Effect in a Two-Species
    Bosonic Hubbard Model.” <i>Physical Review B</i>, vol. 108, no. 5, 054201, American
    Physical Society, 2023, doi:<a href="https://doi.org/10.1103/physrevb.108.054201">10.1103/physrevb.108.054201</a>.
  short: P. Brighi, M. Ljubotina, D.A. Abanin, M. Serbyn, Physical Review B 108 (2023).
corr_author: '1'
date_created: 2023-08-05T18:25:22Z
date_published: 2023-08-01T00:00:00Z
date_updated: 2025-04-14T07:52:06Z
day: '01'
ddc:
- '530'
department:
- _id: MaSe
doi: 10.1103/physrevb.108.054201
ec_funded: 1
external_id:
  arxiv:
  - '2303.16876'
file:
- access_level: open_access
  checksum: f763000339b5fd543c14377109920690
  content_type: application/pdf
  creator: dernst
  date_created: 2023-08-07T09:48:08Z
  date_updated: 2023-08-07T09:48:08Z
  file_id: '13981'
  file_name: 2023_PhysRevB_Brighi.pdf
  file_size: 3051398
  relation: main_file
  success: 1
file_date_updated: 2023-08-07T09:48:08Z
has_accepted_license: '1'
intvolume: '       108'
issue: '5'
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
project:
- _id: 23841C26-32DE-11EA-91FC-C7463DDC885E
  call_identifier: H2020
  grant_number: '850899'
  name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control'
publication: Physical Review B
publication_identifier:
  eissn:
  - 2469-9969
  issn:
  - 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Many-body localization proximity effect in a two-species bosonic Hubbard model
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: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 108
year: '2023'
...