---
_id: '14931'
abstract:
- lang: eng
  text: We prove an upper bound on the ground state energy of the dilute spin-polarized
    Fermi gas capturing the leading correction to the kinetic energy resulting from
    repulsive interactions. One of the main ingredients in the proof is a rigorous
    implementation of the fermionic cluster expansion of Gaudin et al. (1971) [15].
acknowledgement: A.B.L. would like to thank Johannes Agerskov and Jan Philip Solovej
  for valuable discussions. We thank Alessandro Giuliani for helpful discussions and
  for pointing out the reference [18]. Funding from the European Union's Horizon 2020
  research and innovation programme under the ERC grant agreement No 694227 is acknowledged.
  Financial support by the Austrian Science Fund (FWF) through project number I 6427-N
  (as part of the SFB/TRR 352) is gratefully acknowledged.
article_number: '110320'
article_processing_charge: Yes (in subscription journal)
article_type: original
arxiv: 1
author:
- first_name: Asbjørn Bækgaard
  full_name: Lauritsen, Asbjørn Bækgaard
  id: e1a2682f-dc8d-11ea-abe3-81da9ac728f1
  last_name: Lauritsen
  orcid: 0000-0003-4476-2288
- first_name: Robert
  full_name: Seiringer, Robert
  id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
  last_name: Seiringer
  orcid: 0000-0002-6781-0521
citation:
  ama: 'Lauritsen AB, Seiringer R. Ground state energy of the dilute spin-polarized
    Fermi gas: Upper bound via cluster expansion. <i>Journal of Functional Analysis</i>.
    2024;286(7). doi:<a href="https://doi.org/10.1016/j.jfa.2024.110320">10.1016/j.jfa.2024.110320</a>'
  apa: 'Lauritsen, A. B., &#38; Seiringer, R. (2024). Ground state energy of the dilute
    spin-polarized Fermi gas: Upper bound via cluster expansion. <i>Journal of Functional
    Analysis</i>. Elsevier. <a href="https://doi.org/10.1016/j.jfa.2024.110320">https://doi.org/10.1016/j.jfa.2024.110320</a>'
  chicago: 'Lauritsen, Asbjørn Bækgaard, and Robert Seiringer. “Ground State Energy
    of the Dilute Spin-Polarized Fermi Gas: Upper Bound via Cluster Expansion.” <i>Journal
    of Functional Analysis</i>. Elsevier, 2024. <a href="https://doi.org/10.1016/j.jfa.2024.110320">https://doi.org/10.1016/j.jfa.2024.110320</a>.'
  ieee: 'A. B. Lauritsen and R. Seiringer, “Ground state energy of the dilute spin-polarized
    Fermi gas: Upper bound via cluster expansion,” <i>Journal of Functional Analysis</i>,
    vol. 286, no. 7. Elsevier, 2024.'
  ista: 'Lauritsen AB, Seiringer R. 2024. Ground state energy of the dilute spin-polarized
    Fermi gas: Upper bound via cluster expansion. Journal of Functional Analysis.
    286(7), 110320.'
  mla: 'Lauritsen, Asbjørn Bækgaard, and Robert Seiringer. “Ground State Energy of
    the Dilute Spin-Polarized Fermi Gas: Upper Bound via Cluster Expansion.” <i>Journal
    of Functional Analysis</i>, vol. 286, no. 7, 110320, Elsevier, 2024, doi:<a href="https://doi.org/10.1016/j.jfa.2024.110320">10.1016/j.jfa.2024.110320</a>.'
  short: A.B. Lauritsen, R. Seiringer, Journal of Functional Analysis 286 (2024).
date_created: 2024-02-04T23:00:53Z
date_published: 2024-01-24T00:00:00Z
date_updated: 2024-02-05T12:53:21Z
day: '24'
department:
- _id: RoSe
doi: 10.1016/j.jfa.2024.110320
ec_funded: 1
external_id:
  arxiv:
  - '2301.04894'
intvolume: '       286'
issue: '7'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.1016/j.jfa.2024.110320
month: '01'
oa: 1
oa_version: Published Version
project:
- _id: 25C6DC12-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '694227'
  name: Analysis of quantum many-body systems
- _id: bda63fe5-d553-11ed-ba76-a16e3d2f256b
  grant_number: I06427
  name: Mathematical Challenges in BCS Theory of Superconductivity
publication: Journal of Functional Analysis
publication_identifier:
  eissn:
  - 1096--0783
  issn:
  - 0022-1236
publication_status: epub_ahead
publisher: Elsevier
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Ground state energy of the dilute spin-polarized Fermi gas: Upper bound via
  cluster expansion'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 286
year: '2024'
...
---
_id: '14542'
abstract:
- lang: eng
  text: "It is a remarkable property of BCS theory that the ratio of the energy gap
    at zero temperature Ξ\r\n and the critical temperature Tc is (approximately) given
    by a universal constant, independent of the microscopic details of the fermionic
    interaction. This universality has rigorously been proven quite recently in three
    spatial dimensions and three different limiting regimes: weak coupling, low density
    and high density. The goal of this short note is to extend the universal behavior
    to lower dimensions d=1,2 and give an exemplary proof in the weak coupling limit."
acknowledgement: We thank Robert Seiringer for comments on the paper. J. H. gratefully
  acknowledges  partial  financial  support  by  the  ERC  Advanced  Grant  “RMTBeyond”No.
  101020331.This research was funded in part by the Austrian Science Fund (FWF) grantnumber
  I6427.
article_number: '2360005 '
article_processing_charge: Yes (in subscription journal)
article_type: original
arxiv: 1
author:
- first_name: Sven Joscha
  full_name: Henheik, Sven Joscha
  id: 31d731d7-d235-11ea-ad11-b50331c8d7fb
  last_name: Henheik
  orcid: 0000-0003-1106-327X
- first_name: Asbjørn Bækgaard
  full_name: Lauritsen, Asbjørn Bækgaard
  id: e1a2682f-dc8d-11ea-abe3-81da9ac728f1
  last_name: Lauritsen
  orcid: 0000-0003-4476-2288
- first_name: Barbara
  full_name: Roos, Barbara
  id: 5DA90512-D80F-11E9-8994-2E2EE6697425
  last_name: Roos
  orcid: 0000-0002-9071-5880
citation:
  ama: Henheik SJ, Lauritsen AB, Roos B. Universality in low-dimensional BCS theory.
    <i>Reviews in Mathematical Physics</i>. 2023. doi:<a href="https://doi.org/10.1142/s0129055x2360005x">10.1142/s0129055x2360005x</a>
  apa: Henheik, S. J., Lauritsen, A. B., &#38; Roos, B. (2023). Universality in low-dimensional
    BCS theory. <i>Reviews in Mathematical Physics</i>. World Scientific Publishing.
    <a href="https://doi.org/10.1142/s0129055x2360005x">https://doi.org/10.1142/s0129055x2360005x</a>
  chicago: Henheik, Sven Joscha, Asbjørn Bækgaard Lauritsen, and Barbara Roos. “Universality
    in Low-Dimensional BCS Theory.” <i>Reviews in Mathematical Physics</i>. World
    Scientific Publishing, 2023. <a href="https://doi.org/10.1142/s0129055x2360005x">https://doi.org/10.1142/s0129055x2360005x</a>.
  ieee: S. J. Henheik, A. B. Lauritsen, and B. Roos, “Universality in low-dimensional
    BCS theory,” <i>Reviews in Mathematical Physics</i>. World Scientific Publishing,
    2023.
  ista: Henheik SJ, Lauritsen AB, Roos B. 2023. Universality in low-dimensional BCS
    theory. Reviews in Mathematical Physics., 2360005.
  mla: Henheik, Sven Joscha, et al. “Universality in Low-Dimensional BCS Theory.”
    <i>Reviews in Mathematical Physics</i>, 2360005, World Scientific Publishing,
    2023, doi:<a href="https://doi.org/10.1142/s0129055x2360005x">10.1142/s0129055x2360005x</a>.
  short: S.J. Henheik, A.B. Lauritsen, B. Roos, Reviews in Mathematical Physics (2023).
date_created: 2023-11-15T23:48:14Z
date_published: 2023-10-31T00:00:00Z
date_updated: 2023-11-20T10:04:38Z
day: '31'
department:
- _id: GradSch
- _id: LaEr
- _id: RoSe
doi: 10.1142/s0129055x2360005x
ec_funded: 1
external_id:
  arxiv:
  - '2301.05621'
has_accepted_license: '1'
language:
- iso: eng
license: https://creativecommons.org/licenses/by/4.0/
main_file_link:
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  url: https://doi.org/10.1142/S0129055X2360005X
month: '10'
oa: 1
oa_version: Published Version
project:
- _id: 62796744-2b32-11ec-9570-940b20777f1d
  call_identifier: H2020
  grant_number: '101020331'
  name: Random matrices beyond Wigner-Dyson-Mehta
- _id: bda63fe5-d553-11ed-ba76-a16e3d2f256b
  grant_number: I06427
  name: Mathematical Challenges in BCS Theory of Superconductivity
publication: Reviews in Mathematical Physics
publication_identifier:
  eissn:
  - 1793-6659
  issn:
  - 0129-055X
publication_status: epub_ahead
publisher: World Scientific Publishing
quality_controlled: '1'
scopus_import: '1'
status: public
title: Universality in low-dimensional BCS theory
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---
_id: '12869'
abstract:
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  text: 'We introduce a stochastic cellular automaton as a model for culture and border
    formation. The model can be conceptualized as a game where the expansion rate
    of cultures is quantified in terms of their area and perimeter in such a way that
    approximately round cultures get a competitive advantage.  We first analyse the
    model  with periodic boundary conditions, where we study how the model can end
    up in a fixed state, i.e. freezes. Then we implement the model on the European
    geography with mountains and rivers. We see how the model reproduces some qualitative
    features of European culture formation, namely that rivers and mountains are more
    frequently borders between cultures, mountainous regions tend to have higher cultural
    diversity and the central European plain has less clear cultural borders. '
acknowledgement: 'FRK acknowledges support from the Villum Foundation for support
  through the QMATH center of Excellence (Grant No. 10059) and the Villum Young Investigator
  (Grant No. 25452) programs. '
article_processing_charge: No
author:
- first_name: Frederik Ravn
  full_name: Klausen, Frederik Ravn
  last_name: Klausen
- first_name: Asbjørn Bækgaard
  full_name: Lauritsen, Asbjørn Bækgaard
  id: e1a2682f-dc8d-11ea-abe3-81da9ac728f1
  last_name: Lauritsen
  orcid: 0000-0003-4476-2288
citation:
  ama: 'Klausen FR, Lauritsen AB. Research data for: A stochastic cellular automaton
    model of culture formation. 2023. doi:<a href="https://doi.org/10.15479/AT:ISTA:12869">10.15479/AT:ISTA:12869</a>'
  apa: 'Klausen, F. R., &#38; Lauritsen, A. B. (2023). Research data for: A stochastic
    cellular automaton model of culture formation. Institute of Science and Technology
    Austria. <a href="https://doi.org/10.15479/AT:ISTA:12869">https://doi.org/10.15479/AT:ISTA:12869</a>'
  chicago: 'Klausen, Frederik Ravn, and Asbjørn Bækgaard Lauritsen. “Research Data
    for: A Stochastic Cellular Automaton Model of Culture Formation.” Institute of
    Science and Technology Austria, 2023. <a href="https://doi.org/10.15479/AT:ISTA:12869">https://doi.org/10.15479/AT:ISTA:12869</a>.'
  ieee: 'F. R. Klausen and A. B. Lauritsen, “Research data for: A stochastic cellular
    automaton model of culture formation.” Institute of Science and Technology Austria,
    2023.'
  ista: 'Klausen FR, Lauritsen AB. 2023. Research data for: A stochastic cellular
    automaton model of culture formation, Institute of Science and Technology Austria,
    <a href="https://doi.org/10.15479/AT:ISTA:12869">10.15479/AT:ISTA:12869</a>.'
  mla: 'Klausen, Frederik Ravn, and Asbjørn Bækgaard Lauritsen. <i>Research Data for:
    A Stochastic Cellular Automaton Model of Culture Formation</i>. Institute of Science
    and Technology Austria, 2023, doi:<a href="https://doi.org/10.15479/AT:ISTA:12869">10.15479/AT:ISTA:12869</a>.'
  short: F.R. Klausen, A.B. Lauritsen, (2023).
date_created: 2023-04-26T12:34:49Z
date_published: 2023-04-26T00:00:00Z
date_updated: 2023-11-13T07:47:29Z
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- _id: GradSch
- _id: RoSe
doi: 10.15479/AT:ISTA:12869
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title: 'Research data for: A stochastic cellular automaton model of culture formation'
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_id: '12890'
abstract:
- lang: eng
  text: We introduce a stochastic cellular automaton as a model for culture and border
    formation. The model can be conceptualized as a game where the expansion rate
    of cultures is quantified in terms of their area and perimeter in such a way that
    approximately geometrically round cultures get a competitive advantage. We first
    analyze the model with periodic boundary conditions, where we study how the model
    can end up in a fixed state, i.e., freezes. Then we implement the model on the
    European geography with mountains and rivers. We see how the model reproduces
    some qualitative features of European culture formation, namely, that rivers and
    mountains are more frequently borders between cultures, mountainous regions tend
    to have higher cultural diversity, and the central European plain has less clear
    cultural borders.
acknowledgement: Thanks to Kim Sneppen, Svend Krøjer, Peter Wildemann, Peter Rasmussen
  and Kent Bækgaard Lauritsen for discussions and suggestions. FRK acknowledges support
  from the Villum Foundation for support through the QMATH center of Excellence (Grant
  No. 10059) and the Villum Young Investigator (Grant No. 25452) programs.
article_number: '054307'
article_processing_charge: No
article_type: original
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author:
- first_name: Frederik Ravn
  full_name: Klausen, Frederik Ravn
  last_name: Klausen
- first_name: Asbjørn Bækgaard
  full_name: Lauritsen, Asbjørn Bækgaard
  id: e1a2682f-dc8d-11ea-abe3-81da9ac728f1
  last_name: Lauritsen
  orcid: 0000-0003-4476-2288
citation:
  ama: Klausen FR, Lauritsen AB. Stochastic cellular automaton model of culture formation.
    <i>Physical Review E</i>. 2023;108(5). doi:<a href="https://doi.org/10.1103/PhysRevE.108.054307">10.1103/PhysRevE.108.054307</a>
  apa: Klausen, F. R., &#38; Lauritsen, A. B. (2023). Stochastic cellular automaton
    model of culture formation. <i>Physical Review E</i>. American Physical Society.
    <a href="https://doi.org/10.1103/PhysRevE.108.054307">https://doi.org/10.1103/PhysRevE.108.054307</a>
  chicago: Klausen, Frederik Ravn, and Asbjørn Bækgaard Lauritsen. “Stochastic Cellular
    Automaton Model of Culture Formation.” <i>Physical Review E</i>. American Physical
    Society, 2023. <a href="https://doi.org/10.1103/PhysRevE.108.054307">https://doi.org/10.1103/PhysRevE.108.054307</a>.
  ieee: F. R. Klausen and A. B. Lauritsen, “Stochastic cellular automaton model of
    culture formation,” <i>Physical Review E</i>, vol. 108, no. 5. American Physical
    Society, 2023.
  ista: Klausen FR, Lauritsen AB. 2023. Stochastic cellular automaton model of culture
    formation. Physical Review E. 108(5), 054307.
  mla: Klausen, Frederik Ravn, and Asbjørn Bækgaard Lauritsen. “Stochastic Cellular
    Automaton Model of Culture Formation.” <i>Physical Review E</i>, vol. 108, no.
    5, 054307, American Physical Society, 2023, doi:<a href="https://doi.org/10.1103/PhysRevE.108.054307">10.1103/PhysRevE.108.054307</a>.
  short: F.R. Klausen, A.B. Lauritsen, Physical Review E 108 (2023).
date_created: 2023-05-04T08:35:01Z
date_published: 2023-11-08T00:00:00Z
date_updated: 2023-11-13T07:47:30Z
day: '08'
department:
- _id: GradSch
- _id: RoSe
doi: 10.1103/PhysRevE.108.054307
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oa_version: Preprint
publication: Physical Review E
publication_identifier:
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  issn:
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publication_status: published
publisher: American Physical Society
quality_controlled: '1'
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title: Stochastic cellular automaton model of culture formation
type: journal_article
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volume: 108
year: '2023'
...
---
_id: '11732'
abstract:
- lang: eng
  text: We study the BCS energy gap Ξ in the high–density limit and derive an asymptotic
    formula, which strongly depends on the strength of the interaction potential V
    on the Fermi surface. In combination with the recent result by one of us (Math.
    Phys. Anal. Geom. 25, 3, 2022) on the critical temperature Tc at high densities,
    we prove the universality of the ratio of the energy gap and the critical temperature.
acknowledgement: "We are grateful to Robert Seiringer for helpful discussions and
  many valuable comments\r\non an earlier version of the manuscript. J.H. acknowledges
  partial financial support by the ERC Advanced Grant “RMTBeyond’ No. 101020331. Open
  access funding provided by Institute of Science and Technology (IST Austria)"
article_number: '5'
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Sven Joscha
  full_name: Henheik, Sven Joscha
  id: 31d731d7-d235-11ea-ad11-b50331c8d7fb
  last_name: Henheik
  orcid: 0000-0003-1106-327X
- first_name: Asbjørn Bækgaard
  full_name: Lauritsen, Asbjørn Bækgaard
  id: e1a2682f-dc8d-11ea-abe3-81da9ac728f1
  last_name: Lauritsen
  orcid: 0000-0003-4476-2288
citation:
  ama: Henheik SJ, Lauritsen AB. The BCS energy gap at high density. <i>Journal of
    Statistical Physics</i>. 2022;189. doi:<a href="https://doi.org/10.1007/s10955-022-02965-9">10.1007/s10955-022-02965-9</a>
  apa: Henheik, S. J., &#38; Lauritsen, A. B. (2022). The BCS energy gap at high density.
    <i>Journal of Statistical Physics</i>. Springer Nature. <a href="https://doi.org/10.1007/s10955-022-02965-9">https://doi.org/10.1007/s10955-022-02965-9</a>
  chicago: Henheik, Sven Joscha, and Asbjørn Bækgaard Lauritsen. “The BCS Energy Gap
    at High Density.” <i>Journal of Statistical Physics</i>. Springer Nature, 2022.
    <a href="https://doi.org/10.1007/s10955-022-02965-9">https://doi.org/10.1007/s10955-022-02965-9</a>.
  ieee: S. J. Henheik and A. B. Lauritsen, “The BCS energy gap at high density,” <i>Journal
    of Statistical Physics</i>, vol. 189. Springer Nature, 2022.
  ista: Henheik SJ, Lauritsen AB. 2022. The BCS energy gap at high density. Journal
    of Statistical Physics. 189, 5.
  mla: Henheik, Sven Joscha, and Asbjørn Bækgaard Lauritsen. “The BCS Energy Gap at
    High Density.” <i>Journal of Statistical Physics</i>, vol. 189, 5, Springer Nature,
    2022, doi:<a href="https://doi.org/10.1007/s10955-022-02965-9">10.1007/s10955-022-02965-9</a>.
  short: S.J. Henheik, A.B. Lauritsen, Journal of Statistical Physics 189 (2022).
date_created: 2022-08-05T11:36:56Z
date_published: 2022-07-29T00:00:00Z
date_updated: 2023-09-05T14:57:49Z
day: '29'
ddc:
- '530'
department:
- _id: GradSch
- _id: LaEr
- _id: RoSe
doi: 10.1007/s10955-022-02965-9
ec_funded: 1
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keyword:
- Mathematical Physics
- Statistical and Nonlinear Physics
language:
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month: '07'
oa: 1
oa_version: Published Version
project:
- _id: 62796744-2b32-11ec-9570-940b20777f1d
  call_identifier: H2020
  grant_number: '101020331'
  name: Random matrices beyond Wigner-Dyson-Mehta
publication: Journal of Statistical Physics
publication_identifier:
  eissn:
  - 1572-9613
  issn:
  - 0022-4715
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: The BCS energy gap at high density
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: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 189
year: '2022'
...
---
_id: '9121'
abstract:
- lang: eng
  text: "We show that the energy gap for the BCS gap equation is\r\nΞ=μ(8e−2+o(1))exp(π2μ−−√a)\r\nin
    the low density limit μ→0. Together with the similar result for the critical temperature
    by Hainzl and Seiringer (Lett Math Phys 84: 99–107, 2008), this shows that, in
    the low density limit, the ratio of the energy gap and critical temperature is
    a universal constant independent of the interaction potential V. The results hold
    for a class of potentials with negative scattering length a and no bound states."
acknowledgement: "Most of this work was done as part of the author’s master’s thesis.
  The author would like to thank Jan Philip Solovej for his supervision of this process.\r\nOpen
  Access funding provided by Institute of Science and Technology (IST Austria)"
article_number: '20'
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Asbjørn Bækgaard
  full_name: Lauritsen, Asbjørn Bækgaard
  id: e1a2682f-dc8d-11ea-abe3-81da9ac728f1
  last_name: Lauritsen
  orcid: 0000-0003-4476-2288
citation:
  ama: Lauritsen AB. The BCS energy gap at low density. <i>Letters in Mathematical
    Physics</i>. 2021;111. doi:<a href="https://doi.org/10.1007/s11005-021-01358-5">10.1007/s11005-021-01358-5</a>
  apa: Lauritsen, A. B. (2021). The BCS energy gap at low density. <i>Letters in Mathematical
    Physics</i>. Springer Nature. <a href="https://doi.org/10.1007/s11005-021-01358-5">https://doi.org/10.1007/s11005-021-01358-5</a>
  chicago: Lauritsen, Asbjørn Bækgaard. “The BCS Energy Gap at Low Density.” <i>Letters
    in Mathematical Physics</i>. Springer Nature, 2021. <a href="https://doi.org/10.1007/s11005-021-01358-5">https://doi.org/10.1007/s11005-021-01358-5</a>.
  ieee: A. B. Lauritsen, “The BCS energy gap at low density,” <i>Letters in Mathematical
    Physics</i>, vol. 111. Springer Nature, 2021.
  ista: Lauritsen AB. 2021. The BCS energy gap at low density. Letters in Mathematical
    Physics. 111, 20.
  mla: Lauritsen, Asbjørn Bækgaard. “The BCS Energy Gap at Low Density.” <i>Letters
    in Mathematical Physics</i>, vol. 111, 20, Springer Nature, 2021, doi:<a href="https://doi.org/10.1007/s11005-021-01358-5">10.1007/s11005-021-01358-5</a>.
  short: A.B. Lauritsen, Letters in Mathematical Physics 111 (2021).
date_created: 2021-02-15T09:27:14Z
date_published: 2021-02-12T00:00:00Z
date_updated: 2023-09-05T15:17:16Z
day: '12'
ddc:
- '510'
department:
- _id: GradSch
doi: 10.1007/s11005-021-01358-5
external_id:
  isi:
  - '000617531900001'
file:
- access_level: open_access
  checksum: eaf1b3ff5026f120f0929a5c417dc842
  content_type: application/pdf
  creator: dernst
  date_created: 2021-02-15T09:31:07Z
  date_updated: 2021-02-15T09:31:07Z
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has_accepted_license: '1'
intvolume: '       111'
isi: 1
keyword:
- Mathematical Physics
- Statistical and Nonlinear Physics
language:
- iso: eng
month: '02'
oa: 1
oa_version: Published Version
project:
- _id: B67AFEDC-15C9-11EA-A837-991A96BB2854
  name: IST Austria Open Access Fund
publication: Letters in Mathematical Physics
publication_identifier:
  eissn:
  - 1573-0530
  issn:
  - 0377-9017
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
status: public
title: The BCS energy gap at low density
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: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 111
year: '2021'
...
---
_id: '9891'
abstract:
- lang: eng
  text: 'Extending on ideas of Lewin, Lieb, and Seiringer [Phys. Rev. B 100, 035127
    (2019)], we present a modified “floating crystal” trial state for jellium (also
    known as the classical homogeneous electron gas) with density equal to a characteristic
    function. This allows us to show that three definitions of the jellium energy
    coincide in dimensions d ≥ 2, thus extending the result of Cotar and Petrache
    [“Equality of the Jellium and uniform electron gas next-order asymptotic terms
    for Coulomb and Riesz potentials,” arXiv: 1707.07664 (2019)] and Lewin, Lieb,
    and Seiringer [Phys. Rev. B 100, 035127 (2019)] that the three definitions coincide
    in dimension d ≥ 3. We show that the jellium energy is also equivalent to a “renormalized
    energy” studied in a series of papers by Serfaty and others, and thus, by the
    work of Bétermin and Sandier [Constr. Approximation 47, 39–74 (2018)], we relate
    the jellium energy to the order n term in the logarithmic energy of n points on
    the unit 2-sphere. We improve upon known lower bounds for this renormalized energy.
    Additionally, we derive formulas for the jellium energy of periodic configurations.'
acknowledgement: The author would like to thank Robert Seiringer for guidance and
  many helpful comments on this project. The author would also like to thank Mathieu
  Lewin for his comments on the manuscript and Lorenzo Portinale for providing his
  lecture notes for the course “Mathematics of quantum many-body systems” in spring
  2020, taught by Robert Seiringer. The Proof of Theorem III.1 is inspired by these
  lecture notes.
article_number: '083305'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Asbjørn Bækgaard
  full_name: Lauritsen, Asbjørn Bækgaard
  id: e1a2682f-dc8d-11ea-abe3-81da9ac728f1
  last_name: Lauritsen
  orcid: 0000-0003-4476-2288
citation:
  ama: Lauritsen AB. Floating Wigner crystal and periodic jellium configurations.
    <i>Journal of Mathematical Physics</i>. 2021;62(8). doi:<a href="https://doi.org/10.1063/5.0053494">10.1063/5.0053494</a>
  apa: Lauritsen, A. B. (2021). Floating Wigner crystal and periodic jellium configurations.
    <i>Journal of Mathematical Physics</i>. AIP Publishing. <a href="https://doi.org/10.1063/5.0053494">https://doi.org/10.1063/5.0053494</a>
  chicago: Lauritsen, Asbjørn Bækgaard. “Floating Wigner Crystal and Periodic Jellium
    Configurations.” <i>Journal of Mathematical Physics</i>. AIP Publishing, 2021.
    <a href="https://doi.org/10.1063/5.0053494">https://doi.org/10.1063/5.0053494</a>.
  ieee: A. B. Lauritsen, “Floating Wigner crystal and periodic jellium configurations,”
    <i>Journal of Mathematical Physics</i>, vol. 62, no. 8. AIP Publishing, 2021.
  ista: Lauritsen AB. 2021. Floating Wigner crystal and periodic jellium configurations.
    Journal of Mathematical Physics. 62(8), 083305.
  mla: Lauritsen, Asbjørn Bækgaard. “Floating Wigner Crystal and Periodic Jellium
    Configurations.” <i>Journal of Mathematical Physics</i>, vol. 62, no. 8, 083305,
    AIP Publishing, 2021, doi:<a href="https://doi.org/10.1063/5.0053494">10.1063/5.0053494</a>.
  short: A.B. Lauritsen, Journal of Mathematical Physics 62 (2021).
date_created: 2021-08-12T07:08:36Z
date_published: 2021-08-01T00:00:00Z
date_updated: 2023-08-11T10:29:48Z
day: '01'
ddc:
- '530'
department:
- _id: GradSch
- _id: RoSe
doi: 10.1063/5.0053494
external_id:
  arxiv:
  - '2103.07975'
  isi:
  - '000683960800003'
file:
- access_level: open_access
  checksum: d035be2b894c4d50d90ac5ce252e27cd
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  creator: cziletti
  date_created: 2021-10-27T12:57:06Z
  date_updated: 2021-10-27T12:57:06Z
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  file_name: 2021_JMathPhy_Lauritsen.pdf
  file_size: 4352640
  relation: main_file
  success: 1
file_date_updated: 2021-10-27T12:57:06Z
has_accepted_license: '1'
intvolume: '        62'
isi: 1
issue: '8'
keyword:
- Mathematical Physics
- Statistical and Nonlinear Physics
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
publication: Journal of Mathematical Physics
publication_identifier:
  eissn:
  - 1089-7658
  issn:
  - 0022-2488
publication_status: published
publisher: AIP Publishing
quality_controlled: '1'
scopus_import: '1'
status: public
title: Floating Wigner crystal and periodic jellium configurations
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: 62
year: '2021'
...
