---
_id: '13233'
abstract:
- lang: eng
  text: We study the impact of finite-range physics on the zero-range-model analysis
    of three-body recombination in ultracold atoms. We find that temperature dependence
    of the zero-range parameters can vary from one set of measurements to another
    as it may be driven by the distribution of error bars in the experiment, and not
    by the underlying three-body physics. To study finite-temperature effects in three-body
    recombination beyond the zero-range physics, we introduce and examine a finite-range
    model based upon a hyperspherical formalism. The systematic error discussed in
    this Letter may provide a significant contribution to the error bars of measured
    three-body parameters.
acknowledgement: We thank Jan Arlt, Hans-Werner Hammer, and Karsten Riisager for useful
  discussions. M.L. acknowledges support by the European Research Council (ERC) Starting
  Grant No. 801770 (ANGULON).
article_number: L061304
article_processing_charge: No
article_type: letter_note
arxiv: 1
author:
- first_name: Sofya
  full_name: Agafonova, Sofya
  id: 09501ff6-dca7-11ea-a8ae-b3e0b9166e80
  last_name: Agafonova
  orcid: 0000-0003-0582-2946
- first_name: Mikhail
  full_name: Lemeshko, Mikhail
  id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
  last_name: Lemeshko
  orcid: 0000-0002-6990-7802
- first_name: Artem
  full_name: Volosniev, Artem
  id: 37D278BC-F248-11E8-B48F-1D18A9856A87
  last_name: Volosniev
  orcid: 0000-0003-0393-5525
citation:
  ama: Agafonova S, Lemeshko M, Volosniev A. Finite-range bias in fitting three-body
    loss to the zero-range model. <i>Physical Review A</i>. 2023;107(6). doi:<a href="https://doi.org/10.1103/PhysRevA.107.L061304">10.1103/PhysRevA.107.L061304</a>
  apa: Agafonova, S., Lemeshko, M., &#38; Volosniev, A. (2023). Finite-range bias
    in fitting three-body loss to the zero-range model. <i>Physical Review A</i>.
    American Physical Society. <a href="https://doi.org/10.1103/PhysRevA.107.L061304">https://doi.org/10.1103/PhysRevA.107.L061304</a>
  chicago: Agafonova, Sofya, Mikhail Lemeshko, and Artem Volosniev. “Finite-Range
    Bias in Fitting Three-Body Loss to the Zero-Range Model.” <i>Physical Review A</i>.
    American Physical Society, 2023. <a href="https://doi.org/10.1103/PhysRevA.107.L061304">https://doi.org/10.1103/PhysRevA.107.L061304</a>.
  ieee: S. Agafonova, M. Lemeshko, and A. Volosniev, “Finite-range bias in fitting
    three-body loss to the zero-range model,” <i>Physical Review A</i>, vol. 107,
    no. 6. American Physical Society, 2023.
  ista: Agafonova S, Lemeshko M, Volosniev A. 2023. Finite-range bias in fitting three-body
    loss to the zero-range model. Physical Review A. 107(6), L061304.
  mla: Agafonova, Sofya, et al. “Finite-Range Bias in Fitting Three-Body Loss to the
    Zero-Range Model.” <i>Physical Review A</i>, vol. 107, no. 6, L061304, American
    Physical Society, 2023, doi:<a href="https://doi.org/10.1103/PhysRevA.107.L061304">10.1103/PhysRevA.107.L061304</a>.
  short: S. Agafonova, M. Lemeshko, A. Volosniev, Physical Review A 107 (2023).
corr_author: '1'
date_created: 2023-07-16T22:01:10Z
date_published: 2023-06-20T00:00:00Z
date_updated: 2025-04-14T07:48:53Z
day: '20'
department:
- _id: MiLe
- _id: OnHo
doi: 10.1103/PhysRevA.107.L061304
ec_funded: 1
external_id:
  arxiv:
  - '2302.01022'
  isi:
  - '001019748000005'
intvolume: '       107'
isi: 1
issue: '6'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2302.01022
month: '06'
oa: 1
oa_version: Preprint
project:
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '801770'
  name: 'Angulon: physics and applications of a new quasiparticle'
publication: Physical Review A
publication_identifier:
  eissn:
  - 2469-9934
  issn:
  - 2469-9926
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Finite-range bias in fitting three-body loss to the zero-range model
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 107
year: '2023'
...
---
_id: '13251'
abstract:
- lang: eng
  text: A rotating organic cation and a dynamically disordered soft inorganic cage
    are the hallmark features of organic-inorganic lead-halide perovskites. Understanding
    the interplay between these two subsystems is a challenging problem, but it is
    this coupling that is widely conjectured to be responsible for the unique behavior
    of photocarriers in these materials. In this work, we use the fact that the polarizability
    of the organic cation strongly depends on the ambient electrostatic environment
    to put the molecule forward as a sensitive probe of the local crystal fields inside
    the lattice cell. We measure the average polarizability of the C/N–H bond stretching
    mode by means of infrared spectroscopy, which allows us to deduce the character
    of the motion of the cation molecule, find the magnitude of the local crystal
    field, and place an estimate on the strength of the hydrogen bond between the
    hydrogen and halide atoms. Our results pave the way for understanding electric
    fields in lead-halide perovskites using infrared bond spectroscopy.
acknowledgement: "We thank Bingqing Cheng and Hong-Zhou Ye for valuable discussions;
  Y.W.’s work at IST Austria was supported through ISTernship summer internship program
  funded by OeADGmbH; D.L. and Z.A. acknowledge support by IST Austria (ISTA); M.L.
  acknowledges support by the European Research Council (ERC) Starting Grant No. 801770
  (ANGULON).\r\nA.A.Z. and O.M.B. acknowledge support by KAUST."
article_processing_charge: Yes (via OA deal)
article_type: original
arxiv: 1
author:
- first_name: Yujing
  full_name: Wei, Yujing
  id: 0c5ff007-2600-11ee-b896-98bd8d663294
  last_name: Wei
  orcid: 0000-0001-8913-9719
- first_name: Artem
  full_name: Volosniev, Artem
  id: 37D278BC-F248-11E8-B48F-1D18A9856A87
  last_name: Volosniev
  orcid: 0000-0003-0393-5525
- first_name: Dusan
  full_name: Lorenc, Dusan
  id: 40D8A3E6-F248-11E8-B48F-1D18A9856A87
  last_name: Lorenc
- first_name: Ayan A.
  full_name: Zhumekenov, Ayan A.
  last_name: Zhumekenov
- first_name: Osman M.
  full_name: Bakr, Osman M.
  last_name: Bakr
- first_name: Mikhail
  full_name: Lemeshko, Mikhail
  id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
  last_name: Lemeshko
  orcid: 0000-0002-6990-7802
- first_name: Zhanybek
  full_name: Alpichshev, Zhanybek
  id: 45E67A2A-F248-11E8-B48F-1D18A9856A87
  last_name: Alpichshev
  orcid: 0000-0002-7183-5203
citation:
  ama: Wei Y, Volosniev A, Lorenc D, et al. Bond polarizability as a probe of local
    crystal fields in hybrid lead-halide perovskites. <i>The Journal of Physical Chemistry
    Letters</i>. 2023;14(27):6309-6314. doi:<a href="https://doi.org/10.1021/acs.jpclett.3c01158">10.1021/acs.jpclett.3c01158</a>
  apa: Wei, Y., Volosniev, A., Lorenc, D., Zhumekenov, A. A., Bakr, O. M., Lemeshko,
    M., &#38; Alpichshev, Z. (2023). Bond polarizability as a probe of local crystal
    fields in hybrid lead-halide perovskites. <i>The Journal of Physical Chemistry
    Letters</i>. American Chemical Society. <a href="https://doi.org/10.1021/acs.jpclett.3c01158">https://doi.org/10.1021/acs.jpclett.3c01158</a>
  chicago: Wei, Yujing, Artem Volosniev, Dusan Lorenc, Ayan A. Zhumekenov, Osman M.
    Bakr, Mikhail Lemeshko, and Zhanybek Alpichshev. “Bond Polarizability as a Probe
    of Local Crystal Fields in Hybrid Lead-Halide Perovskites.” <i>The Journal of
    Physical Chemistry Letters</i>. American Chemical Society, 2023. <a href="https://doi.org/10.1021/acs.jpclett.3c01158">https://doi.org/10.1021/acs.jpclett.3c01158</a>.
  ieee: Y. Wei <i>et al.</i>, “Bond polarizability as a probe of local crystal fields
    in hybrid lead-halide perovskites,” <i>The Journal of Physical Chemistry Letters</i>,
    vol. 14, no. 27. American Chemical Society, pp. 6309–6314, 2023.
  ista: Wei Y, Volosniev A, Lorenc D, Zhumekenov AA, Bakr OM, Lemeshko M, Alpichshev
    Z. 2023. Bond polarizability as a probe of local crystal fields in hybrid lead-halide
    perovskites. The Journal of Physical Chemistry Letters. 14(27), 6309–6314.
  mla: Wei, Yujing, et al. “Bond Polarizability as a Probe of Local Crystal Fields
    in Hybrid Lead-Halide Perovskites.” <i>The Journal of Physical Chemistry Letters</i>,
    vol. 14, no. 27, American Chemical Society, 2023, pp. 6309–14, doi:<a href="https://doi.org/10.1021/acs.jpclett.3c01158">10.1021/acs.jpclett.3c01158</a>.
  short: Y. Wei, A. Volosniev, D. Lorenc, A.A. Zhumekenov, O.M. Bakr, M. Lemeshko,
    Z. Alpichshev, The Journal of Physical Chemistry Letters 14 (2023) 6309–6314.
corr_author: '1'
date_created: 2023-07-18T11:13:17Z
date_published: 2023-07-05T00:00:00Z
date_updated: 2025-04-23T13:01:50Z
day: '05'
ddc:
- '530'
department:
- _id: MiLe
- _id: ZhAl
doi: 10.1021/acs.jpclett.3c01158
ec_funded: 1
external_id:
  arxiv:
  - '2304.14198'
  isi:
  - '001022811500001'
  pmid:
  - '37405449'
file:
- access_level: open_access
  checksum: c0c040063f06a51b9c463adc504f1a23
  content_type: application/pdf
  creator: dernst
  date_created: 2023-07-19T06:55:39Z
  date_updated: 2023-07-19T06:55:39Z
  file_id: '13253'
  file_name: 2023_JourPhysChemistry_Wei.pdf
  file_size: 2121252
  relation: main_file
  success: 1
file_date_updated: 2023-07-19T06:55:39Z
has_accepted_license: '1'
intvolume: '        14'
isi: 1
issue: '27'
keyword:
- General Materials Science
- Physical and Theoretical Chemistry
language:
- iso: eng
license: https://creativecommons.org/licenses/by/4.0/
month: '07'
oa: 1
oa_version: Published Version
page: 6309-6314
pmid: 1
project:
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '801770'
  name: 'Angulon: physics and applications of a new quasiparticle'
publication: The Journal of Physical Chemistry Letters
publication_identifier:
  eissn:
  - 1948-7185
publication_status: published
publisher: American Chemical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Bond polarizability as a probe of local crystal fields in hybrid lead-halide
  perovskites
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: 14
year: '2023'
...
---
_id: '13275'
abstract:
- lang: eng
  text: We introduce a generic and accessible implementation of an exact diagonalization
    method for studying few-fermion models. Our aim is to provide a testbed for the
    newcomers to the field as well as a stepping stone for trying out novel optimizations
    and approximations. This userguide consists of a description of the algorithm,
    and several examples in varying orders of sophistication. In particular, we exemplify
    our routine using an effective-interaction approach that fixes the low-energy
    physics. We benchmark this approach against the existing data, and show that it
    is able to deliver state-of-the-art numerical results at a significantly reduced
    computational cost.
article_processing_charge: No
author:
- first_name: Lukas
  full_name: Rammelmüller, Lukas
  last_name: Rammelmüller
- first_name: David
  full_name: Huber, David
  last_name: Huber
- first_name: Artem
  full_name: Volosniev, Artem
  id: 37D278BC-F248-11E8-B48F-1D18A9856A87
  last_name: Volosniev
  orcid: 0000-0003-0393-5525
citation:
  ama: Rammelmüller L, Huber D, Volosniev A. Codebase release 1.0 for FermiFCI. 2023.
    doi:<a href="https://doi.org/10.21468/scipostphyscodeb.12-r1.0">10.21468/scipostphyscodeb.12-r1.0</a>
  apa: Rammelmüller, L., Huber, D., &#38; Volosniev, A. (2023). Codebase release 1.0
    for FermiFCI. SciPost Foundation. <a href="https://doi.org/10.21468/scipostphyscodeb.12-r1.0">https://doi.org/10.21468/scipostphyscodeb.12-r1.0</a>
  chicago: Rammelmüller, Lukas, David Huber, and Artem Volosniev. “Codebase Release
    1.0 for FermiFCI.” SciPost Foundation, 2023. <a href="https://doi.org/10.21468/scipostphyscodeb.12-r1.0">https://doi.org/10.21468/scipostphyscodeb.12-r1.0</a>.
  ieee: L. Rammelmüller, D. Huber, and A. Volosniev, “Codebase release 1.0 for FermiFCI.”
    SciPost Foundation, 2023.
  ista: Rammelmüller L, Huber D, Volosniev A. 2023. Codebase release 1.0 for FermiFCI,
    SciPost Foundation, <a href="https://doi.org/10.21468/scipostphyscodeb.12-r1.0">10.21468/scipostphyscodeb.12-r1.0</a>.
  mla: Rammelmüller, Lukas, et al. <i>Codebase Release 1.0 for FermiFCI</i>. SciPost
    Foundation, 2023, doi:<a href="https://doi.org/10.21468/scipostphyscodeb.12-r1.0">10.21468/scipostphyscodeb.12-r1.0</a>.
  short: L. Rammelmüller, D. Huber, A. Volosniev, (2023).
corr_author: '1'
date_created: 2023-07-24T10:46:23Z
date_published: 2023-04-19T00:00:00Z
date_updated: 2025-04-15T06:54:44Z
day: '19'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.21468/scipostphyscodeb.12-r1.0
ec_funded: 1
main_file_link:
- open_access: '1'
  url: https://doi.org/10.21468/SciPostPhysCodeb.12-r1.0
month: '04'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '754411'
  name: ISTplus - Postdoctoral Fellowships
publisher: SciPost Foundation
related_material:
  record:
  - id: '13276'
    relation: used_in_publication
    status: public
status: public
title: Codebase release 1.0 for FermiFCI
type: research_data_reference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2023'
...
---
_id: '13276'
abstract:
- lang: eng
  text: <jats:p>We introduce a generic and accessible implementation of an exact diagonalization
    method for studying few-fermion models. Our aim is to provide a testbed for the
    newcomers to the field as well as a stepping stone for trying out novel optimizations
    and approximations. This userguide consists of a description of the algorithm,
    and several examples in varying orders of sophistication. In particular, we exemplify
    our routine using an effective-interaction approach that fixes the low-energy
    physics. We benchmark this approach against the existing data, and show that it
    is able to deliver state-of-the-art numerical results at a significantly reduced
    computational cost.</jats:p>
acknowledgement: "We acknowledge fruitful discussions with Hans-Werner Hammer and
  thank Gerhard Zürn and\r\nPietro Massignan for sending us their data. We thank Fabian
  Brauneis for beta-testing the\r\nprovided code-package, and comments on the manuscript.\r\nL.R.
  is supported by FP7/ERC Consolidator Grant QSIMCORR, No.\r\n771891, and the Deutsche
  Forschungsgemeinschaft (DFG, German Research Foundation) under\r\nGermany’s Excellence
  Strategy –EXC–2111–390814868. A.G.V. acknowledges support\r\nby European Union’s
  Horizon 2020 research and innovation programme under the Marie\r\nSkłodowska-Curie
  Grant Agreement No. 754411."
article_number: '12'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Lukas
  full_name: Rammelmüller, Lukas
  last_name: Rammelmüller
- first_name: David
  full_name: Huber, David
  last_name: Huber
- first_name: Artem
  full_name: Volosniev, Artem
  id: 37D278BC-F248-11E8-B48F-1D18A9856A87
  last_name: Volosniev
  orcid: 0000-0003-0393-5525
citation:
  ama: Rammelmüller L, Huber D, Volosniev A. A modular implementation of an effective
    interaction approach for harmonically trapped fermions in 1D. <i>SciPost Physics
    Codebases</i>. 2023. doi:<a href="https://doi.org/10.21468/scipostphyscodeb.12">10.21468/scipostphyscodeb.12</a>
  apa: Rammelmüller, L., Huber, D., &#38; Volosniev, A. (2023). A modular implementation
    of an effective interaction approach for harmonically trapped fermions in 1D.
    <i>SciPost Physics Codebases</i>. SciPost Foundation. <a href="https://doi.org/10.21468/scipostphyscodeb.12">https://doi.org/10.21468/scipostphyscodeb.12</a>
  chicago: Rammelmüller, Lukas, David Huber, and Artem Volosniev. “A Modular Implementation
    of an Effective Interaction Approach for Harmonically Trapped Fermions in 1D.”
    <i>SciPost Physics Codebases</i>. SciPost Foundation, 2023. <a href="https://doi.org/10.21468/scipostphyscodeb.12">https://doi.org/10.21468/scipostphyscodeb.12</a>.
  ieee: L. Rammelmüller, D. Huber, and A. Volosniev, “A modular implementation of
    an effective interaction approach for harmonically trapped fermions in 1D,” <i>SciPost
    Physics Codebases</i>. SciPost Foundation, 2023.
  ista: Rammelmüller L, Huber D, Volosniev A. 2023. A modular implementation of an
    effective interaction approach for harmonically trapped fermions in 1D. SciPost
    Physics Codebases., 12.
  mla: Rammelmüller, Lukas, et al. “A Modular Implementation of an Effective Interaction
    Approach for Harmonically Trapped Fermions in 1D.” <i>SciPost Physics Codebases</i>,
    12, SciPost Foundation, 2023, doi:<a href="https://doi.org/10.21468/scipostphyscodeb.12">10.21468/scipostphyscodeb.12</a>.
  short: L. Rammelmüller, D. Huber, A. Volosniev, SciPost Physics Codebases (2023).
corr_author: '1'
date_created: 2023-07-24T10:47:15Z
date_published: 2023-04-19T00:00:00Z
date_updated: 2025-04-15T06:54:44Z
day: '19'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.21468/scipostphyscodeb.12
ec_funded: 1
external_id:
  arxiv:
  - '2202.04603'
file:
- access_level: open_access
  checksum: f583a70fe915d2208c803f5afb426daa
  content_type: application/pdf
  creator: dernst
  date_created: 2023-07-31T09:09:23Z
  date_updated: 2023-07-31T09:09:23Z
  file_id: '13330'
  file_name: 2023_SciPostPhysCodebase_Rammelmueller.pdf
  file_size: 551418
  relation: main_file
  success: 1
file_date_updated: 2023-07-31T09:09:23Z
has_accepted_license: '1'
language:
- iso: eng
month: '04'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '754411'
  name: ISTplus - Postdoctoral Fellowships
publication: SciPost Physics Codebases
publication_identifier:
  issn:
  - 2949-804X
publication_status: published
publisher: SciPost Foundation
quality_controlled: '1'
related_material:
  record:
  - id: '13275'
    relation: research_data
    status: public
status: public
title: A modular implementation of an effective interaction approach for harmonically
  trapped fermions in 1D
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
year: '2023'
...
---
_id: '13278'
abstract:
- lang: eng
  text: We present a numerical analysis of spin-1/2 fermions in a one-dimensional
    harmonic potential in the presence of a magnetic point-like impurity at the center
    of the trap. The model represents a few-body analogue of a magnetic impurity in
    the vicinity of an s-wave superconductor. Already for a few particles we find
    a ground-state level crossing between sectors with different fermion parities.
    We interpret this crossing as a few-body precursor of a quantum phase transition,
    which occurs when the impurity "breaks" a Cooper pair. This picture is further
    corroborated by analyzing density-density correlations in momentum space. Finally,
    we discuss how the system may be realized with existing cold-atoms platforms.
article_number: '006'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Lukas
  full_name: Rammelmüller, Lukas
  last_name: Rammelmüller
- first_name: David
  full_name: Huber, David
  last_name: Huber
- first_name: Matija
  full_name: Čufar, Matija
  last_name: Čufar
- first_name: Joachim
  full_name: Brand, Joachim
  last_name: Brand
- 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: Rammelmüller L, Huber D, Čufar M, Brand J, Hammer H-W, Volosniev A. Magnetic
    impurity in a one-dimensional few-fermion system. <i>SciPost Physics</i>. 2023;14(1).
    doi:<a href="https://doi.org/10.21468/scipostphys.14.1.006">10.21468/scipostphys.14.1.006</a>
  apa: Rammelmüller, L., Huber, D., Čufar, M., Brand, J., Hammer, H.-W., &#38; Volosniev,
    A. (2023). Magnetic impurity in a one-dimensional few-fermion system. <i>SciPost
    Physics</i>. SciPost Foundation. <a href="https://doi.org/10.21468/scipostphys.14.1.006">https://doi.org/10.21468/scipostphys.14.1.006</a>
  chicago: Rammelmüller, Lukas, David Huber, Matija Čufar, Joachim Brand, Hans-Werner
    Hammer, and Artem Volosniev. “Magnetic Impurity in a One-Dimensional Few-Fermion
    System.” <i>SciPost Physics</i>. SciPost Foundation, 2023. <a href="https://doi.org/10.21468/scipostphys.14.1.006">https://doi.org/10.21468/scipostphys.14.1.006</a>.
  ieee: L. Rammelmüller, D. Huber, M. Čufar, J. Brand, H.-W. Hammer, and A. Volosniev,
    “Magnetic impurity in a one-dimensional few-fermion system,” <i>SciPost Physics</i>,
    vol. 14, no. 1. SciPost Foundation, 2023.
  ista: Rammelmüller L, Huber D, Čufar M, Brand J, Hammer H-W, Volosniev A. 2023.
    Magnetic impurity in a one-dimensional few-fermion system. SciPost Physics. 14(1),
    006.
  mla: Rammelmüller, Lukas, et al. “Magnetic Impurity in a One-Dimensional Few-Fermion
    System.” <i>SciPost Physics</i>, vol. 14, no. 1, 006, SciPost Foundation, 2023,
    doi:<a href="https://doi.org/10.21468/scipostphys.14.1.006">10.21468/scipostphys.14.1.006</a>.
  short: L. Rammelmüller, D. Huber, M. Čufar, J. Brand, H.-W. Hammer, A. Volosniev,
    SciPost Physics 14 (2023).
date_created: 2023-07-24T10:48:23Z
date_published: 2023-01-24T00:00:00Z
date_updated: 2023-12-13T11:39:32Z
day: '24'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.21468/scipostphys.14.1.006
external_id:
  arxiv:
  - '2204.01606'
  isi:
  - '001000325800008'
file:
- access_level: open_access
  checksum: ffdb70b9ae7aa45ea4ea6096ecbd6431
  content_type: application/pdf
  creator: dernst
  date_created: 2023-07-31T08:44:38Z
  date_updated: 2023-07-31T08:44:38Z
  file_id: '13328'
  file_name: 2023_SciPostPhysics_Rammelmueller.pdf
  file_size: 1163444
  relation: main_file
  success: 1
file_date_updated: 2023-07-31T08:44:38Z
has_accepted_license: '1'
intvolume: '        14'
isi: 1
issue: '1'
keyword:
- General Physics and Astronomy
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
publication: SciPost Physics
publication_identifier:
  issn:
  - 2542-4653
publication_status: published
publisher: SciPost Foundation
quality_controlled: '1'
scopus_import: '1'
status: public
title: Magnetic impurity in a one-dimensional few-fermion system
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: 14
year: '2023'
...
---
_id: '14756'
abstract:
- lang: eng
  text: "We prove the r-spin cobordism hypothesis in the setting of (weak) 2-categories
    for every positive integer r: the 2-groupoid of 2-dimensional fully extended r-spin
    TQFTs with given target is equivalent to the homotopy fixed points of an induced
    Spin 2r -action. In particular, such TQFTs are classified by fully dualisable
    objects together with a trivialisation of the rth power of their Serre automorphisms.
    For r=1, we recover the oriented case (on which our proof builds), while ordinary
    spin structures correspond to r=2.\r\nTo construct examples, we explicitly describe
    Spin 2r​-homotopy fixed points in the equivariant completion of any symmetric
    monoidal 2-category. We also show that every object in a 2-category of Landau–Ginzburg
    models gives rise to fully extended spin TQFTs and that half of these do not factor
    through the oriented bordism 2-category."
acknowledgement: "N.C. is supported by the DFG Heisenberg Programme.\r\nWe are grateful
  to Tobias Dyckerhoff, Lukas Müller, Ingo Runkel, and Christopher Schommer-Pries
  for helpful discussions."
article_processing_charge: Yes
article_type: original
author:
- first_name: Nils
  full_name: Carqueville, Nils
  last_name: Carqueville
- first_name: Lorant
  full_name: Szegedy, Lorant
  id: 7943226E-220E-11EA-94C7-D59F3DDC885E
  last_name: Szegedy
  orcid: 0000-0003-2834-5054
citation:
  ama: Carqueville N, Szegedy L. Fully extended r-spin TQFTs. <i>Quantum Topology</i>.
    2023;14(3):467-532. doi:<a href="https://doi.org/10.4171/qt/193">10.4171/qt/193</a>
  apa: Carqueville, N., &#38; Szegedy, L. (2023). Fully extended r-spin TQFTs. <i>Quantum
    Topology</i>. European Mathematical Society. <a href="https://doi.org/10.4171/qt/193">https://doi.org/10.4171/qt/193</a>
  chicago: Carqueville, Nils, and Lorant Szegedy. “Fully Extended R-Spin TQFTs.” <i>Quantum
    Topology</i>. European Mathematical Society, 2023. <a href="https://doi.org/10.4171/qt/193">https://doi.org/10.4171/qt/193</a>.
  ieee: N. Carqueville and L. Szegedy, “Fully extended r-spin TQFTs,” <i>Quantum Topology</i>,
    vol. 14, no. 3. European Mathematical Society, pp. 467–532, 2023.
  ista: Carqueville N, Szegedy L. 2023. Fully extended r-spin TQFTs. Quantum Topology.
    14(3), 467–532.
  mla: Carqueville, Nils, and Lorant Szegedy. “Fully Extended R-Spin TQFTs.” <i>Quantum
    Topology</i>, vol. 14, no. 3, European Mathematical Society, 2023, pp. 467–532,
    doi:<a href="https://doi.org/10.4171/qt/193">10.4171/qt/193</a>.
  short: N. Carqueville, L. Szegedy, Quantum Topology 14 (2023) 467–532.
corr_author: '1'
date_created: 2024-01-08T13:14:48Z
date_published: 2023-10-16T00:00:00Z
date_updated: 2025-09-09T14:16:16Z
day: '16'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.4171/qt/193
external_id:
  isi:
  - '001104620800003'
file:
- access_level: open_access
  checksum: b0590aff6e7ec89cc149ba94d459d3a3
  content_type: application/pdf
  creator: dernst
  date_created: 2024-01-09T09:25:34Z
  date_updated: 2024-01-09T09:25:34Z
  file_id: '14764'
  file_name: 2023_QuantumTopol_Carqueville.pdf
  file_size: 707344
  relation: main_file
  success: 1
file_date_updated: 2024-01-09T09:25:34Z
has_accepted_license: '1'
intvolume: '        14'
isi: 1
issue: '3'
keyword:
- Geometry and Topology
- Mathematical Physics
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
page: 467-532
publication: Quantum Topology
publication_identifier:
  issn:
  - 1663-487X
publication_status: published
publisher: European Mathematical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Fully extended r-spin TQFTs
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: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 14
year: '2023'
...
---
_id: '12788'
abstract:
- lang: eng
  text: We show that the simplest of existing molecules—closed-shell diatomics not
    interacting with one another—host topological charges when driven by periodic
    far-off-resonant laser pulses. A periodically kicked molecular rotor can be mapped
    onto a “crystalline” lattice in angular momentum space. This allows us to define
    quasimomenta and the band structure in the Floquet representation, by analogy
    with the Bloch waves of solid-state physics. Applying laser pulses spaced by 1/3
    of the molecular rotational period creates a lattice with three atoms per unit
    cell with staggered hopping. Within the synthetic dimension of the laser strength,
    we discover Dirac cones with topological charges. These Dirac cones, topologically
    protected by reflection and time-reversal symmetry, are reminiscent of (although
    not equivalent to) that seen in graphene. They—and the corresponding edge states—are
    broadly tunable by adjusting the laser strength and can be observed in present-day
    experiments by measuring molecular alignment and populations of rotational levels.
    This paves the way to study controllable topological physics in gas-phase experiments
    with small molecules as well as to classify dynamical molecular states by their
    topological invariants.
acknowledgement: M. L. acknowledges support by the European Research Council (ERC)
  Starting Grant No. 801770 (ANGULON).
article_number: '103202'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Volker
  full_name: Karle, Volker
  id: D7C012AE-D7ED-11E9-95E8-1EC5E5697425
  last_name: Karle
  orcid: 0000-0002-6963-0129
- first_name: Areg
  full_name: Ghazaryan, Areg
  id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87
  last_name: Ghazaryan
  orcid: 0000-0001-9666-3543
- first_name: Mikhail
  full_name: Lemeshko, Mikhail
  id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
  last_name: Lemeshko
  orcid: 0000-0002-6990-7802
citation:
  ama: Karle V, Ghazaryan A, Lemeshko M. Topological charges of periodically kicked
    molecules. <i>Physical Review Letters</i>. 2023;130(10). doi:<a href="https://doi.org/10.1103/PhysRevLett.130.103202">10.1103/PhysRevLett.130.103202</a>
  apa: Karle, V., Ghazaryan, A., &#38; Lemeshko, M. (2023). Topological charges of
    periodically kicked molecules. <i>Physical Review Letters</i>. American Physical
    Society. <a href="https://doi.org/10.1103/PhysRevLett.130.103202">https://doi.org/10.1103/PhysRevLett.130.103202</a>
  chicago: Karle, Volker, Areg Ghazaryan, and Mikhail Lemeshko. “Topological Charges
    of Periodically Kicked Molecules.” <i>Physical Review Letters</i>. American Physical
    Society, 2023. <a href="https://doi.org/10.1103/PhysRevLett.130.103202">https://doi.org/10.1103/PhysRevLett.130.103202</a>.
  ieee: V. Karle, A. Ghazaryan, and M. Lemeshko, “Topological charges of periodically
    kicked molecules,” <i>Physical Review Letters</i>, vol. 130, no. 10. American
    Physical Society, 2023.
  ista: Karle V, Ghazaryan A, Lemeshko M. 2023. Topological charges of periodically
    kicked molecules. Physical Review Letters. 130(10), 103202.
  mla: Karle, Volker, et al. “Topological Charges of Periodically Kicked Molecules.”
    <i>Physical Review Letters</i>, vol. 130, no. 10, 103202, American Physical Society,
    2023, doi:<a href="https://doi.org/10.1103/PhysRevLett.130.103202">10.1103/PhysRevLett.130.103202</a>.
  short: V. Karle, A. Ghazaryan, M. Lemeshko, Physical Review Letters 130 (2023).
corr_author: '1'
date_created: 2023-04-02T22:01:10Z
date_published: 2023-03-10T00:00:00Z
date_updated: 2026-04-07T11:48:53Z
day: '10'
department:
- _id: MiLe
doi: 10.1103/PhysRevLett.130.103202
ec_funded: 1
external_id:
  arxiv:
  - '2206.07067'
  isi:
  - '000957635500003'
  pmid:
  - '36962042'
intvolume: '       130'
isi: 1
issue: '10'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2206.07067
month: '03'
oa: 1
oa_version: Preprint
pmid: 1
project:
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '801770'
  name: 'Angulon: physics and applications of a new quasiparticle'
publication: Physical Review Letters
publication_identifier:
  eissn:
  - 1079-7114
  issn:
  - 0031-9007
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
  link:
  - description: News on the ISTA website
    relation: press_release
    url: https://ista.ac.at/en/news/topology-of-rotating-molecules/
  record:
  - id: '19393'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: Topological charges of periodically kicked molecules
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 130
year: '2023'
...
---
_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
  file_id: '11594'
  file_name: 2022_NewJournalPhysics_Brauneis.pdf
  file_size: 3415721
  relation: main_file
  success: 1
file_date_updated: 2022-07-18T06:33:13Z
has_accepted_license: '1'
intvolume: '        24'
isi: 1
issue: '6'
language:
- iso: eng
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'
...
---
_id: '11592'
abstract:
- lang: eng
  text: 'We compare recent experimental results [Science 375, 528 (2022)] of the superfluid
    unitary Fermi gas near the critical temperature with a thermodynamic model based
    on the elementary excitations of the system. We find good agreement between experimental
    data and our theory for several quantities such as first sound, second sound,
    and superfluid fraction. We also show that mode mixing between first and second
    sound occurs. Finally, we characterize the response amplitude to a density perturbation:
    Close to the critical temperature both first and second sound can be excited through
    a density perturbation, whereas at lower temperatures only the first sound mode
    exhibits a significant response.'
acknowledgement: The authors gratefully acknowledge stimulating discussions with T.
  Enss, and thank an anonymous referee for suggestions and remarks that allowed us
  to improve the original manuscript. This work is supported by the Deutsche Forschungsgemeinschaft
  (DFG, German Research Foundation) under Germany’s Excellence Strategy EXC2181/1-390900948
  (the Heidelberg STRUCTURES Excellence Cluster).
article_number: '063329'
article_processing_charge: No
article_type: original
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: Alberto
  full_name: Cappellaro, Alberto
  id: 9d13b3cb-30a2-11eb-80dc-f772505e8660
  last_name: Cappellaro
  orcid: 0000-0001-6110-2359
- first_name: L.
  full_name: Salasnich, L.
  last_name: Salasnich
citation:
  ama: 'Bighin G, Cappellaro A, Salasnich L. Unitary Fermi superfluid near the critical
    temperature: Thermodynamics and sound modes from elementary excitations. <i>Physical
    Review A</i>. 2022;105(6). doi:<a href="https://doi.org/10.1103/PhysRevA.105.063329">10.1103/PhysRevA.105.063329</a>'
  apa: 'Bighin, G., Cappellaro, A., &#38; Salasnich, L. (2022). Unitary Fermi superfluid
    near the critical temperature: Thermodynamics and sound modes from elementary
    excitations. <i>Physical Review A</i>. American Physical Society. <a href="https://doi.org/10.1103/PhysRevA.105.063329">https://doi.org/10.1103/PhysRevA.105.063329</a>'
  chicago: 'Bighin, Giacomo, Alberto Cappellaro, and L. Salasnich. “Unitary Fermi
    Superfluid near the Critical Temperature: Thermodynamics and Sound Modes from
    Elementary Excitations.” <i>Physical Review A</i>. American Physical Society,
    2022. <a href="https://doi.org/10.1103/PhysRevA.105.063329">https://doi.org/10.1103/PhysRevA.105.063329</a>.'
  ieee: 'G. Bighin, A. Cappellaro, and L. Salasnich, “Unitary Fermi superfluid near
    the critical temperature: Thermodynamics and sound modes from elementary excitations,”
    <i>Physical Review A</i>, vol. 105, no. 6. American Physical Society, 2022.'
  ista: 'Bighin G, Cappellaro A, Salasnich L. 2022. Unitary Fermi superfluid near
    the critical temperature: Thermodynamics and sound modes from elementary excitations.
    Physical Review A. 105(6), 063329.'
  mla: 'Bighin, Giacomo, et al. “Unitary Fermi Superfluid near the Critical Temperature:
    Thermodynamics and Sound Modes from Elementary Excitations.” <i>Physical Review
    A</i>, vol. 105, no. 6, 063329, American Physical Society, 2022, doi:<a href="https://doi.org/10.1103/PhysRevA.105.063329">10.1103/PhysRevA.105.063329</a>.'
  short: G. Bighin, A. Cappellaro, L. Salasnich, Physical Review A 105 (2022).
date_created: 2022-07-17T22:01:55Z
date_published: 2022-06-30T00:00:00Z
date_updated: 2023-08-03T12:00:11Z
day: '30'
department:
- _id: MiLe
doi: 10.1103/PhysRevA.105.063329
external_id:
  arxiv:
  - '2206.03924'
  isi:
  - '000829758500010'
intvolume: '       105'
isi: 1
issue: '6'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: ' https://doi.org/10.48550/arXiv.2206.03924'
month: '06'
oa: 1
oa_version: Preprint
publication: Physical Review A
publication_identifier:
  eissn:
  - 2469-9934
  issn:
  - 2469-9926
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Unitary Fermi superfluid near the critical temperature: Thermodynamics and
  sound modes from elementary excitations'
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 105
year: '2022'
...
---
_id: '11997'
abstract:
- lang: eng
  text: "We study the fate of an impurity in an ultracold heteronuclear Bose mixture,
    focusing on the experimentally relevant case of a ⁴¹K - ⁸⁷Rb mixture, with the
    impurity in a ⁴¹K hyperfine state. Our paper provides a comprehensive description
    of an impurity in a BEC mixture with contact interactions across its phase diagram.
    We present results for the miscible and immiscible regimes, as well as for the
    impurity in a self-bound quantum droplet. Here, varying the interactions, we find
    exotic states where the impurity localizes either at the center or\r\nat the surface
    of the droplet. "
acknowledgement: We thank A. Simoni for providing the calculations of the intercomponent
  scattering lengths. We gratefully acknowledge stimulating discussions with L. A.
  Peña Ardila, R. Schmidt, H. Silva, V. Zampronio, and M. Prevedelli for careful reading.
  G.B. acknowledges support from the Austrian Science Fund (FWF) under Project No.
  M2641-N27. T.M. acknowledges CNPq for support through Bolsa de produtividade em
  Pesquisa No. 311079/2015-6. This work is supported by the Deutsche Forschungsgemeinschaft
  (DFG, German Research Foundation) under Germany's Excellence Strategy No. EXC2181/1-390900948
  (the Heidelberg STRUCTURES Excellence Cluster). This work was supported by the Serrapilheira
  Institute (Grant No. Serra-1812-27802). We thank the High-Performance Computing
  Center (NPAD) at UFRN for providing computational resources.
article_number: '023301'
article_processing_charge: No
article_type: original
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: A.
  full_name: Burchianti, A.
  last_name: Burchianti
- first_name: F.
  full_name: Minardi, F.
  last_name: Minardi
- first_name: T.
  full_name: Macrì, T.
  last_name: Macrì
citation:
  ama: Bighin G, Burchianti A, Minardi F, Macrì T. Impurity in a heteronuclear two-component
    Bose mixture. <i>Physical Review A</i>. 2022;106(2). doi:<a href="https://doi.org/10.1103/PhysRevA.106.023301">10.1103/PhysRevA.106.023301</a>
  apa: Bighin, G., Burchianti, A., Minardi, F., &#38; Macrì, T. (2022). Impurity in
    a heteronuclear two-component Bose mixture. <i>Physical Review A</i>. American
    Physical Society. <a href="https://doi.org/10.1103/PhysRevA.106.023301">https://doi.org/10.1103/PhysRevA.106.023301</a>
  chicago: Bighin, Giacomo, A. Burchianti, F. Minardi, and T. Macrì. “Impurity in
    a Heteronuclear Two-Component Bose Mixture.” <i>Physical Review A</i>. American
    Physical Society, 2022. <a href="https://doi.org/10.1103/PhysRevA.106.023301">https://doi.org/10.1103/PhysRevA.106.023301</a>.
  ieee: G. Bighin, A. Burchianti, F. Minardi, and T. Macrì, “Impurity in a heteronuclear
    two-component Bose mixture,” <i>Physical Review A</i>, vol. 106, no. 2. American
    Physical Society, 2022.
  ista: Bighin G, Burchianti A, Minardi F, Macrì T. 2022. Impurity in a heteronuclear
    two-component Bose mixture. Physical Review A. 106(2), 023301.
  mla: Bighin, Giacomo, et al. “Impurity in a Heteronuclear Two-Component Bose Mixture.”
    <i>Physical Review A</i>, vol. 106, no. 2, 023301, American Physical Society,
    2022, doi:<a href="https://doi.org/10.1103/PhysRevA.106.023301">10.1103/PhysRevA.106.023301</a>.
  short: G. Bighin, A. Burchianti, F. Minardi, T. Macrì, Physical Review A 106 (2022).
date_created: 2022-08-28T22:02:00Z
date_published: 2022-08-04T00:00:00Z
date_updated: 2025-04-14T08:57:11Z
day: '04'
department:
- _id: MiLe
doi: 10.1103/PhysRevA.106.023301
external_id:
  arxiv:
  - '2109.07451'
  isi:
  - '000837953600006'
intvolume: '       106'
isi: 1
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2109.07451
month: '08'
oa: 1
oa_version: Preprint
project:
- _id: 26986C82-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: M02641
  name: A path-integral approach to composite impurities
publication: Physical Review A
publication_identifier:
  eissn:
  - 2469-9934
  issn:
  - 2469-9926
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Impurity in a heteronuclear two-component Bose mixture
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 106
year: '2022'
...
---
_id: '11998'
abstract:
- lang: eng
  text: Recently it became possible to study highly excited rotational states of molecules
    in superfluid helium through nonadiabatic alignment experiments (Cherepanov et
    al 2021 Phys. Rev. A 104 L061303). This calls for theoretical approaches that
    go beyond explaining renormalized values of molecular spectroscopic constants,
    which suffices when only the lowest few rotational states are involved. As the
    first step in this direction, here we present a basic quantum mechanical model
    describing highly excited rotational states of molecules in superfluid helium
    nanodroplets. We show that a linear molecule immersed in a superfluid can be seen
    as an effective symmetric top, similar to the rotational structure of radicals,
    such as OH or NO, but with the angular momentum of the superfluid playing the
    role of the electronic angular momentum in free molecules. The simple theory sheds
    light onto what happens when the rotational angular momentum of the molecule increases
    beyond the lowest excited states accessible by infrared spectroscopy. In addition,
    the model allows to estimate the effective rotational and centrifugal distortion
    constants for a broad range of species and to explain the crossover between light
    and heavy molecules in superfluid 4He in terms of the many-body wavefunction structure.
    Some of the above mentioned insights can be acquired by analyzing a simple 2 ×
    2 matrix.
acknowledgement: IC acknowledges the support by the European Union's Horizon 2020
  research and innovation programme under the Marie Skłodowska-Curie Grant Agreement
  No. 665385. GB acknowledges support from the Austrian Science Fund (FWF), under
  Project No. M2461-N27 and from the Deutsche Forschungsgemeinschaft (DFG, German
  Research Foundation) under Germany's Excellence Strategy EXC2181/1-390900948 (the
  Heidelberg STRUCTURES Excellence Cluster). ML acknowledges support by the Austrian
  Science Fund (FWF), under Project No. P29902-N27, and by the European Research Council
  (ERC) starting Grant No. 801770 (ANGULON). HS acknowledges support from the Independent
  Research Fund Denmark (Project No. 8021-00232B) and from the Villum Fonden through
  a Villum Investigator Grant No. 25886.
article_number: '075004'
article_processing_charge: Yes
article_type: original
author:
- first_name: Igor
  full_name: Cherepanov, Igor
  id: 339C7E5A-F248-11E8-B48F-1D18A9856A87
  last_name: Cherepanov
- first_name: Giacomo
  full_name: Bighin, Giacomo
  id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87
  last_name: Bighin
  orcid: 0000-0001-8823-9777
- first_name: Constant A.
  full_name: Schouder, Constant A.
  last_name: Schouder
- first_name: Adam S.
  full_name: Chatterley, Adam S.
  last_name: Chatterley
- first_name: Henrik
  full_name: Stapelfeldt, Henrik
  last_name: Stapelfeldt
- first_name: Mikhail
  full_name: Lemeshko, Mikhail
  id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
  last_name: Lemeshko
  orcid: 0000-0002-6990-7802
citation:
  ama: Cherepanov I, Bighin G, Schouder CA, Chatterley AS, Stapelfeldt H, Lemeshko
    M. A simple model for high rotational excitations of molecules in a superfluid.
    <i>New Journal of Physics</i>. 2022;24(7). doi:<a href="https://doi.org/10.1088/1367-2630/ac8113">10.1088/1367-2630/ac8113</a>
  apa: Cherepanov, I., Bighin, G., Schouder, C. A., Chatterley, A. S., Stapelfeldt,
    H., &#38; Lemeshko, M. (2022). A simple model for high rotational excitations
    of molecules in a superfluid. <i>New Journal of Physics</i>. IOP Publishing. <a
    href="https://doi.org/10.1088/1367-2630/ac8113">https://doi.org/10.1088/1367-2630/ac8113</a>
  chicago: Cherepanov, Igor, Giacomo Bighin, Constant A. Schouder, Adam S. Chatterley,
    Henrik Stapelfeldt, and Mikhail Lemeshko. “A Simple Model for High Rotational
    Excitations of Molecules in a Superfluid.” <i>New Journal of Physics</i>. IOP
    Publishing, 2022. <a href="https://doi.org/10.1088/1367-2630/ac8113">https://doi.org/10.1088/1367-2630/ac8113</a>.
  ieee: I. Cherepanov, G. Bighin, C. A. Schouder, A. S. Chatterley, H. Stapelfeldt,
    and M. Lemeshko, “A simple model for high rotational excitations of molecules
    in a superfluid,” <i>New Journal of Physics</i>, vol. 24, no. 7. IOP Publishing,
    2022.
  ista: Cherepanov I, Bighin G, Schouder CA, Chatterley AS, Stapelfeldt H, Lemeshko
    M. 2022. A simple model for high rotational excitations of molecules in a superfluid.
    New Journal of Physics. 24(7), 075004.
  mla: Cherepanov, Igor, et al. “A Simple Model for High Rotational Excitations of
    Molecules in a Superfluid.” <i>New Journal of Physics</i>, vol. 24, no. 7, 075004,
    IOP Publishing, 2022, doi:<a href="https://doi.org/10.1088/1367-2630/ac8113">10.1088/1367-2630/ac8113</a>.
  short: I. Cherepanov, G. Bighin, C.A. Schouder, A.S. Chatterley, H. Stapelfeldt,
    M. Lemeshko, New Journal of Physics 24 (2022).
corr_author: '1'
date_created: 2022-08-28T22:02:01Z
date_published: 2022-08-11T00:00:00Z
date_updated: 2025-05-14T11:20:18Z
day: '11'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1088/1367-2630/ac8113
ec_funded: 1
external_id:
  isi:
  - '000839216900001'
file:
- access_level: open_access
  checksum: 10116a08d3489befc13dba2cc44490f1
  content_type: application/pdf
  creator: alisjak
  date_created: 2022-08-29T09:57:40Z
  date_updated: 2022-08-29T09:57:40Z
  file_id: '12005'
  file_name: 2022_NewJournalofPhysics_Cherepanov.pdf
  file_size: 1912882
  relation: main_file
  success: 1
file_date_updated: 2022-08-29T09:57:40Z
has_accepted_license: '1'
intvolume: '        24'
isi: 1
issue: '7'
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
project:
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '801770'
  name: 'Angulon: physics and applications of a new quasiparticle'
- _id: 26986C82-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: M02641
  name: A path-integral approach to composite impurities
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: A simple model for high rotational excitations of molecules in a superfluid
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: 24
year: '2022'
...
---
_id: '12139'
abstract:
- lang: eng
  text: We demonstrate the formation of robust zero-energy modes close to magnetic
    impurities in the iron-based superconductor FeSe1-z Tez. We find that the Zeeman
    field generated by the impurity favors a spin-triplet interorbital pairing as
    opposed to the spin-singlet intraorbital pairing prevalent in the bulk. The preferred
    spin-triplet pairing preserves time-reversal symmetry and is topological, as robust,
    topologically protected zero modes emerge at the boundary between regions with
    different pairing states. Moreover, the zero modes form Kramers doublets that
    are insensitive to the direction of the spin polarization or to the separation
    between impurities. We argue that our theoretical results are consistent with
    recent experimental measurements on FeSe1-z Tez.
acknowledgement: "We thank Armin Rahmani, Andrey V. Chubukov, Jay D. Sau and Ruixing
  Zhang for fruitful discussions. AK and PG are supported by NSF-DMR2037996. PG also
  acknowledges support from NSF-DMR1824265. RMF was supported by the U. S. Department
  of Energy, Office\r\nof Science, Basic Energy Sciences, Materials Sciences and Engineering
  Division, under Award No. DE-SC0020045. Part of this work was performed at the Aspen
  Center for Physics, which is supported by National Science Foundation grant PHY-1607611. "
article_number: L201107
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Areg
  full_name: Ghazaryan, Areg
  id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87
  last_name: Ghazaryan
  orcid: 0000-0001-9666-3543
- first_name: Ammar
  full_name: Kirmani, Ammar
  last_name: Kirmani
- first_name: Rafael M.
  full_name: Fernandes, Rafael M.
  last_name: Fernandes
- first_name: Pouyan
  full_name: Ghaemi, Pouyan
  last_name: Ghaemi
citation:
  ama: Ghazaryan A, Kirmani A, Fernandes RM, Ghaemi P. Anomalous Shiba states in topological
    iron-based superconductors. <i>Physical Review B</i>. 2022;106(20). doi:<a href="https://doi.org/10.1103/physrevb.106.l201107">10.1103/physrevb.106.l201107</a>
  apa: Ghazaryan, A., Kirmani, A., Fernandes, R. M., &#38; Ghaemi, P. (2022). Anomalous
    Shiba states in topological iron-based superconductors. <i>Physical Review B</i>.
    American Physical Society. <a href="https://doi.org/10.1103/physrevb.106.l201107">https://doi.org/10.1103/physrevb.106.l201107</a>
  chicago: Ghazaryan, Areg, Ammar Kirmani, Rafael M. Fernandes, and Pouyan Ghaemi.
    “Anomalous Shiba States in Topological Iron-Based Superconductors.” <i>Physical
    Review B</i>. American Physical Society, 2022. <a href="https://doi.org/10.1103/physrevb.106.l201107">https://doi.org/10.1103/physrevb.106.l201107</a>.
  ieee: A. Ghazaryan, A. Kirmani, R. M. Fernandes, and P. Ghaemi, “Anomalous Shiba
    states in topological iron-based superconductors,” <i>Physical Review B</i>, vol.
    106, no. 20. American Physical Society, 2022.
  ista: Ghazaryan A, Kirmani A, Fernandes RM, Ghaemi P. 2022. Anomalous Shiba states
    in topological iron-based superconductors. Physical Review B. 106(20), L201107.
  mla: Ghazaryan, Areg, et al. “Anomalous Shiba States in Topological Iron-Based Superconductors.”
    <i>Physical Review B</i>, vol. 106, no. 20, L201107, American Physical Society,
    2022, doi:<a href="https://doi.org/10.1103/physrevb.106.l201107">10.1103/physrevb.106.l201107</a>.
  short: A. Ghazaryan, A. Kirmani, R.M. Fernandes, P. Ghaemi, Physical Review B 106
    (2022).
date_created: 2023-01-12T12:04:43Z
date_published: 2022-11-15T00:00:00Z
date_updated: 2023-08-04T08:55:31Z
day: '15'
department:
- _id: MiLe
doi: 10.1103/physrevb.106.l201107
external_id:
  arxiv:
  - '2207.12425'
  isi:
  - '000893171800001'
intvolume: '       106'
isi: 1
issue: '20'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: ' https://doi.org/10.48550/arXiv.2207.12425'
month: '11'
oa: 1
oa_version: Preprint
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: Anomalous Shiba states in topological iron-based superconductors
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 106
year: '2022'
...
---
_id: '12150'
abstract:
- lang: eng
  text: Methods inspired from machine learning have recently attracted great interest
    in the computational study of quantum many-particle systems. So far, however,
    it has proven challenging to deal with microscopic models in which the total number
    of particles is not conserved. To address this issue, we propose a variant of
    neural network states, which we term neural coherent states. Taking the Fröhlich
    impurity model as a case study, we show that neural coherent states can learn
    the ground state of nonadditive systems very well. In particular, we recover exact
    diagonalization in all regimes tested and observe substantial improvement over
    the standard coherent state estimates in the most challenging intermediate-coupling
    regime. Our approach is generic and does not assume specific details of the system,
    suggesting wide applications.
acknowledgement: 'We acknowledge fruitful discussions with G. Bighin, G. Fabiani,
  A. Ghazaryan, C. Lampert, and A. Volosniev at various stages of this work. W.R.
  acknowledges support through a DOC Fellowship of the Austrian Academy of Sciences
  and has received funding from the EU Horizon 2020 programme under the Marie Skłodowska-Curie
  Grant Agreement No. 665385. M.L. and J.H.M. acknowledge support by the European
  Research Council (ERC) Starting Grant No. 801770 (ANGULON) and Synergy Grant No.
  856538 (3D-MAGiC), respectively. This work is part of the Shell-NWO/FOMinitiative
  “Computational sciences for energy research” of Shell and Chemical Sciences, Earth
  and Life Sciences, Physical Sciences, FOM and STW. '
article_number: '155127'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Wojciech
  full_name: Rzadkowski, Wojciech
  id: 48C55298-F248-11E8-B48F-1D18A9856A87
  last_name: Rzadkowski
  orcid: 0000-0002-1106-4419
- first_name: Mikhail
  full_name: Lemeshko, Mikhail
  id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
  last_name: Lemeshko
  orcid: 0000-0002-6990-7802
- first_name: Johan H.
  full_name: Mentink, Johan H.
  last_name: Mentink
citation:
  ama: Rzadkowski W, Lemeshko M, Mentink JH. Artificial neural network states for
    nonadditive systems. <i>Physical Review B</i>. 2022;106(15). doi:<a href="https://doi.org/10.1103/physrevb.106.155127">10.1103/physrevb.106.155127</a>
  apa: Rzadkowski, W., Lemeshko, M., &#38; Mentink, J. H. (2022). Artificial neural
    network states for nonadditive systems. <i>Physical Review B</i>. American Physical
    Society. <a href="https://doi.org/10.1103/physrevb.106.155127">https://doi.org/10.1103/physrevb.106.155127</a>
  chicago: Rzadkowski, Wojciech, Mikhail Lemeshko, and Johan H. Mentink. “Artificial
    Neural Network States for Nonadditive Systems.” <i>Physical Review B</i>. American
    Physical Society, 2022. <a href="https://doi.org/10.1103/physrevb.106.155127">https://doi.org/10.1103/physrevb.106.155127</a>.
  ieee: W. Rzadkowski, M. Lemeshko, and J. H. Mentink, “Artificial neural network
    states for nonadditive systems,” <i>Physical Review B</i>, vol. 106, no. 15. American
    Physical Society, 2022.
  ista: Rzadkowski W, Lemeshko M, Mentink JH. 2022. Artificial neural network states
    for nonadditive systems. Physical Review B. 106(15), 155127.
  mla: Rzadkowski, Wojciech, et al. “Artificial Neural Network States for Nonadditive
    Systems.” <i>Physical Review B</i>, vol. 106, no. 15, 155127, American Physical
    Society, 2022, doi:<a href="https://doi.org/10.1103/physrevb.106.155127">10.1103/physrevb.106.155127</a>.
  short: W. Rzadkowski, M. Lemeshko, J.H. Mentink, Physical Review B 106 (2022).
date_created: 2023-01-12T12:07:49Z
date_published: 2022-10-15T00:00:00Z
date_updated: 2025-03-31T16:01:11Z
day: '15'
department:
- _id: MiLe
doi: 10.1103/physrevb.106.155127
ec_funded: 1
external_id:
  arxiv:
  - '2105.15193'
  isi:
  - '000875189100005'
intvolume: '       106'
isi: 1
issue: '15'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: ' https://doi.org/10.48550/arXiv.2105.15193'
month: '10'
oa: 1
oa_version: Preprint
project:
- _id: 05A235A0-7A3F-11EA-A408-12923DDC885E
  grant_number: '25681'
  name: Analytic and machine learning approaches to composite quantum impurities
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '801770'
  name: 'Angulon: physics and applications of a new quasiparticle'
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: Artificial neural network states for nonadditive systems
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 106
year: '2022'
...
---
_id: '12154'
abstract:
- lang: eng
  text: We review our theoretical results of the sound propagation in two-dimensional
    (2D) systems of ultracold fermionic and bosonic atoms. In the superfluid phase,
    characterized by the spontaneous symmetry breaking of the U(1) symmetry, there
    is the coexistence of first and second sound. In the case of weakly-interacting
    repulsive bosons, we model the recent measurements of the sound velocities of
    39K atoms in 2D obtained in the weakly-interacting regime and around the Berezinskii–Kosterlitz–Thouless
    (BKT) superfluid-to-normal transition temperature. In particular, we perform a
    quite accurate computation of the superfluid density and show that it is reasonably
    consistent with the experimental results. For superfluid attractive fermions,
    we calculate the first and second sound velocities across the whole BCS-BEC crossover.
    In the low-temperature regime, we reproduce the recent measurements of first-sound
    speed with 6Li atoms. We also predict that there is mixing between sound modes
    only in the finite-temperature BEC regime.
acknowledgement: "This research is partially supported by University of Padova, BIRD
  grant “Ultracold atoms\r\nin curved geometries”. KF is supported by Fondazione CARIPARO
  with a PhD fellowship. AT is\r\npartially supported by French National Research
  Agency ANR Grant Droplets N. ANR-19-CE30-0003-02. LS thanks Herwig Ott and Sandro
  Wimberger for their kind invitation to the\r\nInternational Workshop “Quantum Transport
  with ultracold atoms” (2022)."
article_number: '2182'
article_processing_charge: Yes
article_type: original
author:
- first_name: Luca
  full_name: Salasnich, Luca
  last_name: Salasnich
- first_name: Alberto
  full_name: Cappellaro, Alberto
  id: 9d13b3cb-30a2-11eb-80dc-f772505e8660
  last_name: Cappellaro
  orcid: 0000-0001-6110-2359
- first_name: Koichiro
  full_name: Furutani, Koichiro
  last_name: Furutani
- first_name: Andrea
  full_name: Tononi, Andrea
  last_name: Tononi
- first_name: Giacomo
  full_name: Bighin, Giacomo
  id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87
  last_name: Bighin
  orcid: 0000-0001-8823-9777
citation:
  ama: Salasnich L, Cappellaro A, Furutani K, Tononi A, Bighin G. First and second
    sound in two-dimensional bosonic and fermionic superfluids. <i>Symmetry</i>. 2022;14(10).
    doi:<a href="https://doi.org/10.3390/sym14102182">10.3390/sym14102182</a>
  apa: Salasnich, L., Cappellaro, A., Furutani, K., Tononi, A., &#38; Bighin, G. (2022).
    First and second sound in two-dimensional bosonic and fermionic superfluids. <i>Symmetry</i>.
    MDPI. <a href="https://doi.org/10.3390/sym14102182">https://doi.org/10.3390/sym14102182</a>
  chicago: Salasnich, Luca, Alberto Cappellaro, Koichiro Furutani, Andrea Tononi,
    and Giacomo Bighin. “First and Second Sound in Two-Dimensional Bosonic and Fermionic
    Superfluids.” <i>Symmetry</i>. MDPI, 2022. <a href="https://doi.org/10.3390/sym14102182">https://doi.org/10.3390/sym14102182</a>.
  ieee: L. Salasnich, A. Cappellaro, K. Furutani, A. Tononi, and G. Bighin, “First
    and second sound in two-dimensional bosonic and fermionic superfluids,” <i>Symmetry</i>,
    vol. 14, no. 10. MDPI, 2022.
  ista: Salasnich L, Cappellaro A, Furutani K, Tononi A, Bighin G. 2022. First and
    second sound in two-dimensional bosonic and fermionic superfluids. Symmetry. 14(10),
    2182.
  mla: Salasnich, Luca, et al. “First and Second Sound in Two-Dimensional Bosonic
    and Fermionic Superfluids.” <i>Symmetry</i>, vol. 14, no. 10, 2182, MDPI, 2022,
    doi:<a href="https://doi.org/10.3390/sym14102182">10.3390/sym14102182</a>.
  short: L. Salasnich, A. Cappellaro, K. Furutani, A. Tononi, G. Bighin, Symmetry
    14 (2022).
date_created: 2023-01-12T12:08:31Z
date_published: 2022-10-17T00:00:00Z
date_updated: 2023-08-09T10:13:17Z
day: '17'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.3390/sym14102182
external_id:
  isi:
  - '000875039200001'
file:
- access_level: open_access
  checksum: 9b6bd0e484834dd76d7b26e3c5fba8bd
  content_type: application/pdf
  creator: dernst
  date_created: 2023-01-24T10:56:12Z
  date_updated: 2023-01-24T10:56:12Z
  file_id: '12361'
  file_name: 2022_Symmetry_Salsnich.pdf
  file_size: 843723
  relation: main_file
  success: 1
file_date_updated: 2023-01-24T10:56:12Z
has_accepted_license: '1'
intvolume: '        14'
isi: 1
issue: '10'
keyword:
- Physics and Astronomy (miscellaneous)
- General Mathematics
- Chemistry (miscellaneous)
- Computer Science (miscellaneous)
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
publication: Symmetry
publication_identifier:
  issn:
  - 2073-8994
publication_status: published
publisher: MDPI
quality_controlled: '1'
scopus_import: '1'
status: public
title: First and second sound in two-dimensional bosonic and fermionic superfluids
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: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 14
year: '2022'
...
---
_id: '12213'
abstract:
- lang: eng
  text: 'Motivated by properties-controlling potential of the strain, we investigate
    strain dependence of structure, electronic, and magnetic properties of Sr2IrO4
    using complementary theoretical tools: ab-initio calculations, analytical approaches
    (rigid octahedra picture, Slater-Koster integrals), and extended t−J model. We
    find that strain affects both Ir-Ir distance and Ir-O-Ir angle, and the rigid
    octahedra picture is not relevant. Second, we find fundamentally different behavior
    for compressive and tensile strain. One remarkable feature is the formation of
    two subsets of bond- and orbital-dependent carriers, a compass-like model, under
    compression. This originates from the strain-induced renormalization of the Ir-O-Ir
    superexchange and O on-site energy. We also show that under compressive (tensile)
    strain, Fermi surface becomes highly dispersive (relatively flat). Already at
    a tensile strain of 1.5%, we observe spectral weight redistribution, with the
    low-energy band acquiring almost purely singlet character. These results can be
    directly compared with future experiments.'
acknowledgement: E.M.P. thanks Eugenio Paris, Thorsten Schmitt, Krzysztof Wohlfeld,
  and other coauthors for an inspiring previous collaboration23, and is grateful to
  Gang Cao, Ambrose Seo, and Jungho Kim for insightful discussions. R.R. acknowledges
  helpful discussion with Sanjeev Kumar and Manuel Richter. This project has received
  funding from the European Union’s Horizon 2020 research and innovation program under
  the Marie Sklodowska-Curie grant agreement No 754411. C.C.C. acknowledges support
  from the U.S. National Science Foundation Award No. DMR-2142801.
article_number: '90'
article_processing_charge: No
article_type: original
author:
- first_name: Ekaterina
  full_name: Paerschke, Ekaterina
  id: 8275014E-6063-11E9-9B7F-6338E6697425
  last_name: Paerschke
  orcid: 0000-0003-0853-8182
- first_name: Wei-Chih
  full_name: Chen, Wei-Chih
  last_name: Chen
- first_name: Rajyavardhan
  full_name: Ray, Rajyavardhan
  last_name: Ray
- first_name: Cheng-Chien
  full_name: Chen, Cheng-Chien
  last_name: Chen
citation:
  ama: Paerschke E, Chen W-C, Ray R, Chen C-C. Evolution of electronic and magnetic
    properties of Sr₂IrO₄ under strain. <i>npj Quantum Materials</i>. 2022;7. doi:<a
    href="https://doi.org/10.1038/s41535-022-00496-w">10.1038/s41535-022-00496-w</a>
  apa: Paerschke, E., Chen, W.-C., Ray, R., &#38; Chen, C.-C. (2022). Evolution of
    electronic and magnetic properties of Sr₂IrO₄ under strain. <i>Npj Quantum Materials</i>.
    Springer Nature. <a href="https://doi.org/10.1038/s41535-022-00496-w">https://doi.org/10.1038/s41535-022-00496-w</a>
  chicago: Paerschke, Ekaterina, Wei-Chih Chen, Rajyavardhan Ray, and Cheng-Chien
    Chen. “Evolution of Electronic and Magnetic Properties of Sr₂IrO₄ under Strain.”
    <i>Npj Quantum Materials</i>. Springer Nature, 2022. <a href="https://doi.org/10.1038/s41535-022-00496-w">https://doi.org/10.1038/s41535-022-00496-w</a>.
  ieee: E. Paerschke, W.-C. Chen, R. Ray, and C.-C. Chen, “Evolution of electronic
    and magnetic properties of Sr₂IrO₄ under strain,” <i>npj Quantum Materials</i>,
    vol. 7. Springer Nature, 2022.
  ista: Paerschke E, Chen W-C, Ray R, Chen C-C. 2022. Evolution of electronic and
    magnetic properties of Sr₂IrO₄ under strain. npj Quantum Materials. 7, 90.
  mla: Paerschke, Ekaterina, et al. “Evolution of Electronic and Magnetic Properties
    of Sr₂IrO₄ under Strain.” <i>Npj Quantum Materials</i>, vol. 7, 90, Springer Nature,
    2022, doi:<a href="https://doi.org/10.1038/s41535-022-00496-w">10.1038/s41535-022-00496-w</a>.
  short: E. Paerschke, W.-C. Chen, R. Ray, C.-C. Chen, Npj Quantum Materials 7 (2022).
corr_author: '1'
date_created: 2023-01-16T09:46:01Z
date_published: 2022-09-10T00:00:00Z
date_updated: 2025-04-14T07:44:00Z
day: '10'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1038/s41535-022-00496-w
ec_funded: 1
external_id:
  isi:
  - '000852381200003'
file:
- access_level: open_access
  checksum: d93b477b5b95c0d1b8f9fef90a81f565
  content_type: application/pdf
  creator: dernst
  date_created: 2023-01-27T07:59:27Z
  date_updated: 2023-01-27T07:59:27Z
  file_id: '12414'
  file_name: 2022_NPJ_Paerschke.pdf
  file_size: 1852598
  relation: main_file
  success: 1
file_date_updated: 2023-01-27T07:59:27Z
has_accepted_license: '1'
intvolume: '         7'
isi: 1
keyword:
- Condensed Matter Physics
- Electronic
- Optical and Magnetic Materials
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '754411'
  name: ISTplus - Postdoctoral Fellowships
publication: npj Quantum Materials
publication_identifier:
  eissn:
  - 2397-4648
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
  link:
  - relation: erratum
    url: https://doi.org/10.1038/s41535-022-00510-1
scopus_import: '1'
status: public
title: Evolution of electronic and magnetic properties of Sr₂IrO₄ under strain
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: 7
year: '2022'
...
---
_id: '17070'
abstract:
- lang: eng
  text: We investigate the formation of magnetic Bose polaron, an impurity atom dressed
    by spin-wave excitations, in a one-dimensional spinor Bose gas. Within an effective
    potential model, the impurity is strongly confined by the host excitations which
    can even overcome the impurity-medium repulsion leading to a self-localized quasi-particle
    state. The phase diagram of the attractive and self-bound repulsive magnetic polaron,
    repulsive non-magnetic (Fröhlich-type) polaron and impurity-medium phase-separation
    regimes is explored with respect to the Rabi-coupling between the spin components,
    spin–spin interactions and impurity-medium coupling. The residue of such magnetic
    polarons decreases substantially in both strong attractive and repulsive branches
    with strong impurity-spin interactions, illustrating significant dressing of the
    impurity. The impurity can be used to probe and maneuver the spin polarization
    of the magnetic medium while suppressing ferromagnetic spin–spin correlations.
    It is shown that mean-field theory fails as the spinor gas approaches immiscibility
    since the generated spin-wave excitations are prominent. Our findings illustrate
    that impurities can be utilized to generate controllable spin–spin correlations
    and magnetic polaron states which can be realized with current cold atom setups.
article_number: '083030'
article_processing_charge: Yes
article_type: original
arxiv: 1
author:
- first_name: S I
  full_name: Mistakidis, S I
  last_name: Mistakidis
- first_name: Georgios
  full_name: Koutentakis, Georgios
  id: d7b23d3a-9e21-11ec-b482-f76739596b95
  last_name: Koutentakis
- first_name: F
  full_name: Grusdt, F
  last_name: Grusdt
- first_name: P
  full_name: Schmelcher, P
  last_name: Schmelcher
- first_name: H R
  full_name: Sadeghpour, H R
  last_name: Sadeghpour
citation:
  ama: 'Mistakidis SI, Koutentakis G, Grusdt F, Schmelcher P, Sadeghpour HR. Inducing
    spin-order with an impurity: phase diagram of the magnetic Bose polaron. <i>New
    Journal of Physics</i>. 2022;24(8). doi:<a href="https://doi.org/10.1088/1367-2630/ac836c">10.1088/1367-2630/ac836c</a>'
  apa: 'Mistakidis, S. I., Koutentakis, G., Grusdt, F., Schmelcher, P., &#38; Sadeghpour,
    H. R. (2022). Inducing spin-order with an impurity: phase diagram of the magnetic
    Bose polaron. <i>New Journal of Physics</i>. IOP Publishing. <a href="https://doi.org/10.1088/1367-2630/ac836c">https://doi.org/10.1088/1367-2630/ac836c</a>'
  chicago: 'Mistakidis, S I, Georgios Koutentakis, F Grusdt, P Schmelcher, and H R
    Sadeghpour. “Inducing Spin-Order with an Impurity: Phase Diagram of the Magnetic
    Bose Polaron.” <i>New Journal of Physics</i>. IOP Publishing, 2022. <a href="https://doi.org/10.1088/1367-2630/ac836c">https://doi.org/10.1088/1367-2630/ac836c</a>.'
  ieee: 'S. I. Mistakidis, G. Koutentakis, F. Grusdt, P. Schmelcher, and H. R. Sadeghpour,
    “Inducing spin-order with an impurity: phase diagram of the magnetic Bose polaron,”
    <i>New Journal of Physics</i>, vol. 24, no. 8. IOP Publishing, 2022.'
  ista: 'Mistakidis SI, Koutentakis G, Grusdt F, Schmelcher P, Sadeghpour HR. 2022.
    Inducing spin-order with an impurity: phase diagram of the magnetic Bose polaron.
    New Journal of Physics. 24(8), 083030.'
  mla: 'Mistakidis, S. I., et al. “Inducing Spin-Order with an Impurity: Phase Diagram
    of the Magnetic Bose Polaron.” <i>New Journal of Physics</i>, vol. 24, no. 8,
    083030, IOP Publishing, 2022, doi:<a href="https://doi.org/10.1088/1367-2630/ac836c">10.1088/1367-2630/ac836c</a>.'
  short: S.I. Mistakidis, G. Koutentakis, F. Grusdt, P. Schmelcher, H.R. Sadeghpour,
    New Journal of Physics 24 (2022).
date_created: 2024-05-29T06:11:35Z
date_published: 2022-09-08T00:00:00Z
date_updated: 2024-07-31T12:14:55Z
day: '08'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1088/1367-2630/ac836c
external_id:
  arxiv:
  - '2204.10960'
file:
- access_level: open_access
  checksum: 85776a9d3abe163b33b322c8e346752a
  content_type: application/pdf
  creator: dernst
  date_created: 2024-07-31T12:13:16Z
  date_updated: 2024-07-31T12:13:16Z
  file_id: '17358'
  file_name: 2022_NewJournPhysics_Mistakidis.pdf
  file_size: 4201283
  relation: main_file
  success: 1
file_date_updated: 2024-07-31T12:13:16Z
has_accepted_license: '1'
intvolume: '        24'
issue: '8'
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
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: 'Inducing spin-order with an impurity: phase diagram of the magnetic Bose polaron'
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: 24
year: '2022'
...
---
_id: '10771'
abstract:
- lang: eng
  text: A critical overview of the theory of the chirality-induced spin selectivity
    (CISS) effect, that is, phenomena in which the chirality of molecular species
    imparts significant spin selectivity to various electron processes, is provided.
    Based on discussions in a recently held workshop, and further work published since,
    the status of CISS effects—in electron transmission, electron transport, and chemical
    reactions—is reviewed. For each, a detailed discussion of the state-of-the-art
    in theoretical understanding is provided and remaining challenges and research
    opportunities are identified.
article_number: '2106629'
article_processing_charge: No
article_type: review
arxiv: 1
author:
- first_name: Ferdinand
  full_name: Evers, Ferdinand
  last_name: Evers
- first_name: Amnon
  full_name: Aharony, Amnon
  last_name: Aharony
- first_name: Nir
  full_name: Bar-Gill, Nir
  last_name: Bar-Gill
- first_name: Ora
  full_name: Entin-Wohlman, Ora
  last_name: Entin-Wohlman
- first_name: Per
  full_name: Hedegård, Per
  last_name: Hedegård
- first_name: Oded
  full_name: Hod, Oded
  last_name: Hod
- first_name: Pavel
  full_name: Jelinek, Pavel
  last_name: Jelinek
- first_name: Grzegorz
  full_name: Kamieniarz, Grzegorz
  last_name: Kamieniarz
- first_name: Mikhail
  full_name: Lemeshko, Mikhail
  id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
  last_name: Lemeshko
  orcid: 0000-0002-6990-7802
- first_name: Karen
  full_name: Michaeli, Karen
  last_name: Michaeli
- first_name: Vladimiro
  full_name: Mujica, Vladimiro
  last_name: Mujica
- first_name: Ron
  full_name: Naaman, Ron
  last_name: Naaman
- first_name: Yossi
  full_name: Paltiel, Yossi
  last_name: Paltiel
- first_name: Sivan
  full_name: Refaely-Abramson, Sivan
  last_name: Refaely-Abramson
- first_name: Oren
  full_name: Tal, Oren
  last_name: Tal
- first_name: Jos
  full_name: Thijssen, Jos
  last_name: Thijssen
- first_name: Michael
  full_name: Thoss, Michael
  last_name: Thoss
- first_name: Jan M.
  full_name: Van Ruitenbeek, Jan M.
  last_name: Van Ruitenbeek
- first_name: Latha
  full_name: Venkataraman, Latha
  last_name: Venkataraman
- first_name: David H.
  full_name: Waldeck, David H.
  last_name: Waldeck
- first_name: Binghai
  full_name: Yan, Binghai
  last_name: Yan
- first_name: Leeor
  full_name: Kronik, Leeor
  last_name: Kronik
citation:
  ama: 'Evers F, Aharony A, Bar-Gill N, et al. Theory of chirality induced spin selectivity:
    Progress and challenges. <i>Advanced Materials</i>. 2022;34(13). doi:<a href="https://doi.org/10.1002/adma.202106629">10.1002/adma.202106629</a>'
  apa: 'Evers, F., Aharony, A., Bar-Gill, N., Entin-Wohlman, O., Hedegård, P., Hod,
    O., … Kronik, L. (2022). Theory of chirality induced spin selectivity: Progress
    and challenges. <i>Advanced Materials</i>. Wiley. <a href="https://doi.org/10.1002/adma.202106629">https://doi.org/10.1002/adma.202106629</a>'
  chicago: 'Evers, Ferdinand, Amnon Aharony, Nir Bar-Gill, Ora Entin-Wohlman, Per
    Hedegård, Oded Hod, Pavel Jelinek, et al. “Theory of Chirality Induced Spin Selectivity:
    Progress and Challenges.” <i>Advanced Materials</i>. Wiley, 2022. <a href="https://doi.org/10.1002/adma.202106629">https://doi.org/10.1002/adma.202106629</a>.'
  ieee: 'F. Evers <i>et al.</i>, “Theory of chirality induced spin selectivity: Progress
    and challenges,” <i>Advanced Materials</i>, vol. 34, no. 13. Wiley, 2022.'
  ista: 'Evers F, Aharony A, Bar-Gill N, Entin-Wohlman O, Hedegård P, Hod O, Jelinek
    P, Kamieniarz G, Lemeshko M, Michaeli K, Mujica V, Naaman R, Paltiel Y, Refaely-Abramson
    S, Tal O, Thijssen J, Thoss M, Van Ruitenbeek JM, Venkataraman L, Waldeck DH,
    Yan B, Kronik L. 2022. Theory of chirality induced spin selectivity: Progress
    and challenges. Advanced Materials. 34(13), 2106629.'
  mla: 'Evers, Ferdinand, et al. “Theory of Chirality Induced Spin Selectivity: Progress
    and Challenges.” <i>Advanced Materials</i>, vol. 34, no. 13, 2106629, Wiley, 2022,
    doi:<a href="https://doi.org/10.1002/adma.202106629">10.1002/adma.202106629</a>.'
  short: F. Evers, A. Aharony, N. Bar-Gill, O. Entin-Wohlman, P. Hedegård, O. Hod,
    P. Jelinek, G. Kamieniarz, M. Lemeshko, K. Michaeli, V. Mujica, R. Naaman, Y.
    Paltiel, S. Refaely-Abramson, O. Tal, J. Thijssen, M. Thoss, J.M. Van Ruitenbeek,
    L. Venkataraman, D.H. Waldeck, B. Yan, L. Kronik, Advanced Materials 34 (2022).
date_created: 2022-02-20T23:01:33Z
date_published: 2022-04-01T00:00:00Z
date_updated: 2026-04-02T12:45:15Z
day: '01'
department:
- _id: MiLe
doi: 10.1002/adma.202106629
external_id:
  arxiv:
  - '2108.09998'
  isi:
  - '000753795900001'
  pmid:
  - '35064943'
intvolume: '        34'
isi: 1
issue: '13'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/2108.09998
month: '04'
oa: 1
oa_version: Preprint
pmid: 1
publication: Advanced Materials
publication_identifier:
  eissn:
  - 1521-4095
  issn:
  - 0935-9648
publication_status: published
publisher: Wiley
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Theory of chirality induced spin selectivity: Progress and challenges'
type: journal_article
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 34
year: '2022'
...
---
_id: '10845'
abstract:
- lang: eng
  text: We study an impurity with a resonance level whose position coincides with
    the Fermi energy of the surrounding Fermi gas. An impurity causes a rapid variation
    of the scattering phase shift for fermions at the Fermi surface, introducing a
    new characteristic length scale into the problem. We investigate manifestations
    of this length scale in the self-energy of the impurity and in the density of
    the bath. Our calculations reveal a model-independent deformation of the density
    of the Fermi gas, which is determined by the width of the resonance. To provide
    a broader picture, we investigate time evolution of the density in quench dynamics,
    and study the behavior of the system at finite temperatures. Finally, we briefly
    discuss implications of our findings for the Fermi-polaron problem.
acknowledgement: M.L. acknowledges support by the Austrian Science Fund (FWF), under
  Project No. P29902-N27, and by the European Research Council (ERC) starting Grant
  No. 801770 (ANGULON). A.G.V. acknowledges support by European Union’s Horizon 2020
  research and innovation programme under the Marie Skłodowska-Curie Grant Agreement
  No. 754411.
article_number: '013160'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Mikhail
  full_name: Maslov, Mikhail
  id: 2E65BB0E-F248-11E8-B48F-1D18A9856A87
  last_name: Maslov
  orcid: 0000-0003-4074-2570
- first_name: Mikhail
  full_name: Lemeshko, Mikhail
  id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
  last_name: Lemeshko
  orcid: 0000-0002-6990-7802
- first_name: Artem
  full_name: Volosniev, Artem
  id: 37D278BC-F248-11E8-B48F-1D18A9856A87
  last_name: Volosniev
  orcid: 0000-0003-0393-5525
citation:
  ama: Maslov M, Lemeshko M, Volosniev A. Impurity with a resonance in the vicinity
    of the Fermi energy. <i>Physical Review Research</i>. 2022;4. doi:<a href="https://doi.org/10.1103/PhysRevResearch.4.013160">10.1103/PhysRevResearch.4.013160</a>
  apa: Maslov, M., Lemeshko, M., &#38; Volosniev, A. (2022). Impurity with a resonance
    in the vicinity of the Fermi energy. <i>Physical Review Research</i>. American
    Physical Society. <a href="https://doi.org/10.1103/PhysRevResearch.4.013160">https://doi.org/10.1103/PhysRevResearch.4.013160</a>
  chicago: Maslov, Mikhail, Mikhail Lemeshko, and Artem Volosniev. “Impurity with
    a Resonance in the Vicinity of the Fermi Energy.” <i>Physical Review Research</i>.
    American Physical Society, 2022. <a href="https://doi.org/10.1103/PhysRevResearch.4.013160">https://doi.org/10.1103/PhysRevResearch.4.013160</a>.
  ieee: M. Maslov, M. Lemeshko, and A. Volosniev, “Impurity with a resonance in the
    vicinity of the Fermi energy,” <i>Physical Review Research</i>, vol. 4. American
    Physical Society, 2022.
  ista: Maslov M, Lemeshko M, Volosniev A. 2022. Impurity with a resonance in the
    vicinity of the Fermi energy. Physical Review Research. 4, 013160.
  mla: Maslov, Mikhail, et al. “Impurity with a Resonance in the Vicinity of the Fermi
    Energy.” <i>Physical Review Research</i>, vol. 4, 013160, American Physical Society,
    2022, doi:<a href="https://doi.org/10.1103/PhysRevResearch.4.013160">10.1103/PhysRevResearch.4.013160</a>.
  short: M. Maslov, M. Lemeshko, A. Volosniev, Physical Review Research 4 (2022).
corr_author: '1'
date_created: 2022-03-13T23:01:46Z
date_published: 2022-03-01T00:00:00Z
date_updated: 2026-04-07T11:52:53Z
day: '01'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1103/PhysRevResearch.4.013160
ec_funded: 1
external_id:
  arxiv:
  - '2111.13570'
file:
- access_level: open_access
  checksum: 62f64b3421a969656ebf52467fa7b6e8
  content_type: application/pdf
  creator: dernst
  date_created: 2022-03-14T08:38:49Z
  date_updated: 2022-03-14T08:38:49Z
  file_id: '10848'
  file_name: 2022_PhysicalReviewResearch_Maslov.pdf
  file_size: 1258324
  relation: main_file
  success: 1
file_date_updated: 2022-03-14T08:38:49Z
has_accepted_license: '1'
intvolume: '         4'
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
project:
- _id: 26031614-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: P29902
  name: Quantum rotations in the presence of a many-body environment
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '801770'
  name: 'Angulon: physics and applications of a new quasiparticle'
- _id: 260C2330-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '754411'
  name: ISTplus - Postdoctoral Fellowships
publication: Physical Review Research
publication_identifier:
  issn:
  - 2643-1564
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
  record:
  - id: '19048'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: Impurity with a resonance in the vicinity of the Fermi energy
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: 4
year: '2022'
...
---
OA_place: publisher
_id: '10759'
abstract:
- lang: eng
  text: In this Thesis, I study composite quantum impurities with variational techniques,
    both inspired by machine learning as well as fully analytic. I supplement this
    with exploration of other applications of machine learning, in particular artificial
    neural networks, in many-body physics. In Chapters 3 and 4, I study quasiparticle
    systems with variational approach. I derive a Hamiltonian describing the angulon
    quasiparticle in the presence of a magnetic field. I apply analytic variational
    treatment to this Hamiltonian. Then, I introduce a variational approach for non-additive
    systems, based on artificial neural networks. I exemplify this approach on the
    example of the polaron quasiparticle (Fröhlich Hamiltonian). In Chapter 5, I continue
    using artificial neural networks, albeit in a different setting. I apply artificial
    neural networks to detect phases from snapshots of two types physical systems.
    Namely, I study Monte Carlo snapshots of multilayer classical spin models as well
    as molecular dynamics maps of colloidal systems. The main type of networks that
    I use here are convolutional neural networks, known for their applicability to
    image data.
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Wojciech
  full_name: Rzadkowski, Wojciech
  id: 48C55298-F248-11E8-B48F-1D18A9856A87
  last_name: Rzadkowski
  orcid: 0000-0002-1106-4419
citation:
  ama: Rzadkowski W. Analytic and machine learning approaches to composite quantum
    impurities. 2022. doi:<a href="https://doi.org/10.15479/at:ista:10759">10.15479/at:ista:10759</a>
  apa: Rzadkowski, W. (2022). <i>Analytic and machine learning approaches to composite
    quantum impurities</i>. Institute of Science and Technology Austria. <a href="https://doi.org/10.15479/at:ista:10759">https://doi.org/10.15479/at:ista:10759</a>
  chicago: Rzadkowski, Wojciech. “Analytic and Machine Learning Approaches to Composite
    Quantum Impurities.” Institute of Science and Technology Austria, 2022. <a href="https://doi.org/10.15479/at:ista:10759">https://doi.org/10.15479/at:ista:10759</a>.
  ieee: W. Rzadkowski, “Analytic and machine learning approaches to composite quantum
    impurities,” Institute of Science and Technology Austria, 2022.
  ista: Rzadkowski W. 2022. Analytic and machine learning approaches to composite
    quantum impurities. Institute of Science and Technology Austria.
  mla: Rzadkowski, Wojciech. <i>Analytic and Machine Learning Approaches to Composite
    Quantum Impurities</i>. Institute of Science and Technology Austria, 2022, doi:<a
    href="https://doi.org/10.15479/at:ista:10759">10.15479/at:ista:10759</a>.
  short: W. Rzadkowski, Analytic and Machine Learning Approaches to Composite Quantum
    Impurities, Institute of Science and Technology Austria, 2022.
corr_author: '1'
date_created: 2022-02-16T13:27:37Z
date_published: 2022-02-21T00:00:00Z
date_updated: 2026-04-07T14:20:12Z
day: '21'
ddc:
- '530'
degree_awarded: PhD
department:
- _id: GradSch
- _id: MiLe
doi: 10.15479/at:ista:10759
ec_funded: 1
file:
- access_level: closed
  checksum: 0fc54ad1eaede879c665ac9b53c93e22
  content_type: application/zip
  creator: wrzadkow
  date_created: 2022-02-21T13:58:16Z
  date_updated: 2022-02-22T07:20:12Z
  file_id: '10785'
  file_name: Rzadkowski_thesis_final_source.zip
  file_size: 17668233
  relation: source_file
- access_level: open_access
  checksum: 22d2d7af37ca31f6b1730c26cac7bced
  content_type: application/pdf
  creator: wrzadkow
  date_created: 2022-02-21T14:02:54Z
  date_updated: 2022-02-21T14:02:54Z
  file_id: '10786'
  file_name: Rzadkowski_thesis_final.pdf
  file_size: 13307331
  relation: main_file
  success: 1
file_date_updated: 2022-02-22T07:20:12Z
has_accepted_license: '1'
language:
- iso: eng
month: '02'
oa: 1
oa_version: Published Version
page: '120'
project:
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
publication_identifier:
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
  record:
  - id: '10762'
    relation: part_of_dissertation
    status: public
  - id: '415'
    relation: part_of_dissertation
    status: public
  - id: '8644'
    relation: part_of_dissertation
    status: public
  - id: '7956'
    relation: part_of_dissertation
    status: public
status: public
supervisor:
- first_name: Mikhail
  full_name: Lemeshko, Mikhail
  id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
  last_name: Lemeshko
  orcid: 0000-0002-6990-7802
title: Analytic and machine learning approaches to composite quantum impurities
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2022'
...
---
OA_place: repository
OA_type: green
_id: '11552'
abstract:
- lang: eng
  text: Rotational dynamics of D2 molecules inside helium nanodroplets is induced
    by a moderately intense femtosecond pump pulse and measured as a function of time
    by recording the yield of HeD+ ions, created through strong-field dissociative
    ionization with a delayed femtosecond probe pulse. The yield oscillates with a
    period of 185 fs, reflecting field-free rotational wave packet dynamics, and the
    oscillation persists for more than 500 periods. Within the experimental uncertainty,
    the rotational constant BHe of the in-droplet D2 molecule, determined by Fourier
    analysis, is the same as Bgas for an isolated D2 molecule. Our observations show
    that the D2 molecules inside helium nanodroplets essentially rotate as free D2
    molecules.
article_number: '243201'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Junjie
  full_name: Qiang, Junjie
  last_name: Qiang
- first_name: Lianrong
  full_name: Zhou, Lianrong
  last_name: Zhou
- first_name: Peifen
  full_name: Lu, Peifen
  last_name: Lu
- first_name: Kang
  full_name: Lin, Kang
  last_name: Lin
- first_name: Yongzhe
  full_name: Ma, Yongzhe
  last_name: Ma
- first_name: Shengzhe
  full_name: Pan, Shengzhe
  last_name: Pan
- first_name: Chenxu
  full_name: Lu, Chenxu
  last_name: Lu
- first_name: Wenyu
  full_name: Jiang, Wenyu
  last_name: Jiang
- first_name: Fenghao
  full_name: Sun, Fenghao
  last_name: Sun
- first_name: Wenbin
  full_name: Zhang, Wenbin
  last_name: Zhang
- first_name: Hui
  full_name: Li, Hui
  last_name: Li
- first_name: Xiaochun
  full_name: Gong, Xiaochun
  last_name: Gong
- first_name: Ilya Sh
  full_name: Averbukh, Ilya Sh
  last_name: Averbukh
- first_name: Yehiam
  full_name: Prior, Yehiam
  last_name: Prior
- first_name: Constant A.
  full_name: Schouder, Constant A.
  last_name: Schouder
- first_name: Henrik
  full_name: Stapelfeldt, Henrik
  last_name: Stapelfeldt
- first_name: Igor
  full_name: Cherepanov, Igor
  id: 339C7E5A-F248-11E8-B48F-1D18A9856A87
  last_name: Cherepanov
- first_name: Mikhail
  full_name: Lemeshko, Mikhail
  id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
  last_name: Lemeshko
  orcid: 0000-0002-6990-7802
- first_name: Wolfgang
  full_name: Jäger, Wolfgang
  last_name: Jäger
- first_name: Jian
  full_name: Wu, Jian
  last_name: Wu
citation:
  ama: Qiang J, Zhou L, Lu P, et al. Femtosecond rotational dynamics of D2 molecules
    in superfluid helium nanodroplets. <i>Physical Review Letters</i>. 2022;128(24).
    doi:<a href="https://doi.org/10.1103/PhysRevLett.128.243201">10.1103/PhysRevLett.128.243201</a>
  apa: Qiang, J., Zhou, L., Lu, P., Lin, K., Ma, Y., Pan, S., … Wu, J. (2022). Femtosecond
    rotational dynamics of D2 molecules in superfluid helium nanodroplets. <i>Physical
    Review Letters</i>. American Physical Society. <a href="https://doi.org/10.1103/PhysRevLett.128.243201">https://doi.org/10.1103/PhysRevLett.128.243201</a>
  chicago: Qiang, Junjie, Lianrong Zhou, Peifen Lu, Kang Lin, Yongzhe Ma, Shengzhe
    Pan, Chenxu Lu, et al. “Femtosecond Rotational Dynamics of D2 Molecules in Superfluid
    Helium Nanodroplets.” <i>Physical Review Letters</i>. American Physical Society,
    2022. <a href="https://doi.org/10.1103/PhysRevLett.128.243201">https://doi.org/10.1103/PhysRevLett.128.243201</a>.
  ieee: J. Qiang <i>et al.</i>, “Femtosecond rotational dynamics of D2 molecules in
    superfluid helium nanodroplets,” <i>Physical Review Letters</i>, vol. 128, no.
    24. American Physical Society, 2022.
  ista: Qiang J, Zhou L, Lu P, Lin K, Ma Y, Pan S, Lu C, Jiang W, Sun F, Zhang W,
    Li H, Gong X, Averbukh IS, Prior Y, Schouder CA, Stapelfeldt H, Cherepanov I,
    Lemeshko M, Jäger W, Wu J. 2022. Femtosecond rotational dynamics of D2 molecules
    in superfluid helium nanodroplets. Physical Review Letters. 128(24), 243201.
  mla: Qiang, Junjie, et al. “Femtosecond Rotational Dynamics of D2 Molecules in Superfluid
    Helium Nanodroplets.” <i>Physical Review Letters</i>, vol. 128, no. 24, 243201,
    American Physical Society, 2022, doi:<a href="https://doi.org/10.1103/PhysRevLett.128.243201">10.1103/PhysRevLett.128.243201</a>.
  short: J. Qiang, L. Zhou, P. Lu, K. Lin, Y. Ma, S. Pan, C. Lu, W. Jiang, F. Sun,
    W. Zhang, H. Li, X. Gong, I.S. Averbukh, Y. Prior, C.A. Schouder, H. Stapelfeldt,
    I. Cherepanov, M. Lemeshko, W. Jäger, J. Wu, Physical Review Letters 128 (2022).
date_created: 2022-07-10T22:01:52Z
date_published: 2022-06-16T00:00:00Z
date_updated: 2026-04-16T08:18:26Z
day: '16'
department:
- _id: MiLe
doi: 10.1103/PhysRevLett.128.243201
ec_funded: 1
external_id:
  arxiv:
  - '2201.09281'
  isi:
  - '000820659700002'
  pmid:
  - '35776471'
intvolume: '       128'
isi: 1
issue: '24'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2201.09281
month: '06'
oa: 1
oa_version: Preprint
pmid: 1
project:
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '801770'
  name: 'Angulon: physics and applications of a new quasiparticle'
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
publication: Physical Review Letters
publication_identifier:
  eissn:
  - 1079-7114
  issn:
  - 0031-9007
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Femtosecond rotational dynamics of D2 molecules in superfluid helium nanodroplets
type: journal_article
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 128
year: '2022'
...
