---
_id: '6649'
abstract:
- lang: eng
  text: "While Hartree–Fock theory is well established as a fundamental approximation
    for interacting fermions, it has been unclear how to describe corrections to it
    due to many-body correlations. In this paper we start from the Hartree–Fock state
    given by plane waves and introduce collective particle–hole pair excitations.
    These pairs can be approximately described by a bosonic quadratic Hamiltonian.
    We use Bogoliubov theory to construct a trial state yielding a rigorous Gell-Mann–Brueckner–type
    upper bound to the ground state energy. Our result justifies the random-phase
    approximation in the mean-field scaling regime, for repulsive, regular interaction
    potentials.\r\n"
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Niels P
  full_name: Benedikter, Niels P
  id: 3DE6C32A-F248-11E8-B48F-1D18A9856A87
  last_name: Benedikter
  orcid: 0000-0002-1071-6091
- first_name: Phan Thành
  full_name: Nam, Phan Thành
  last_name: Nam
- first_name: Marcello
  full_name: Porta, Marcello
  last_name: Porta
- first_name: Benjamin
  full_name: Schlein, Benjamin
  last_name: Schlein
- first_name: Robert
  full_name: Seiringer, Robert
  id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
  last_name: Seiringer
  orcid: 0000-0002-6781-0521
citation:
  ama: Benedikter NP, Nam PT, Porta M, Schlein B, Seiringer R. Optimal upper bound
    for the correlation energy of a Fermi gas in the mean-field regime. <i>Communications
    in Mathematical Physics</i>. 2020;374:2097–2150. doi:<a href="https://doi.org/10.1007/s00220-019-03505-5">10.1007/s00220-019-03505-5</a>
  apa: Benedikter, N. P., Nam, P. T., Porta, M., Schlein, B., &#38; Seiringer, R.
    (2020). Optimal upper bound for the correlation energy of a Fermi gas in the mean-field
    regime. <i>Communications in Mathematical Physics</i>. Springer Nature. <a href="https://doi.org/10.1007/s00220-019-03505-5">https://doi.org/10.1007/s00220-019-03505-5</a>
  chicago: Benedikter, Niels P, Phan Thành Nam, Marcello Porta, Benjamin Schlein,
    and Robert Seiringer. “Optimal Upper Bound for the Correlation Energy of a Fermi
    Gas in the Mean-Field Regime.” <i>Communications in Mathematical Physics</i>.
    Springer Nature, 2020. <a href="https://doi.org/10.1007/s00220-019-03505-5">https://doi.org/10.1007/s00220-019-03505-5</a>.
  ieee: N. P. Benedikter, P. T. Nam, M. Porta, B. Schlein, and R. Seiringer, “Optimal
    upper bound for the correlation energy of a Fermi gas in the mean-field regime,”
    <i>Communications in Mathematical Physics</i>, vol. 374. Springer Nature, pp.
    2097–2150, 2020.
  ista: Benedikter NP, Nam PT, Porta M, Schlein B, Seiringer R. 2020. Optimal upper
    bound for the correlation energy of a Fermi gas in the mean-field regime. Communications
    in Mathematical Physics. 374, 2097–2150.
  mla: Benedikter, Niels P., et al. “Optimal Upper Bound for the Correlation Energy
    of a Fermi Gas in the Mean-Field Regime.” <i>Communications in Mathematical Physics</i>,
    vol. 374, Springer Nature, 2020, pp. 2097–2150, doi:<a href="https://doi.org/10.1007/s00220-019-03505-5">10.1007/s00220-019-03505-5</a>.
  short: N.P. Benedikter, P.T. Nam, M. Porta, B. Schlein, R. Seiringer, Communications
    in Mathematical Physics 374 (2020) 2097–2150.
date_created: 2019-07-18T13:30:04Z
date_published: 2020-03-01T00:00:00Z
date_updated: 2023-08-17T13:51:50Z
day: '01'
ddc:
- '530'
department:
- _id: RoSe
doi: 10.1007/s00220-019-03505-5
ec_funded: 1
external_id:
  arxiv:
  - '1809.01902'
  isi:
  - '000527910700019'
file:
- access_level: open_access
  checksum: f9dd6dd615a698f1d3636c4a092fed23
  content_type: application/pdf
  creator: dernst
  date_created: 2019-07-24T07:19:10Z
  date_updated: 2020-07-14T12:47:35Z
  file_id: '6668'
  file_name: 2019_CommMathPhysics_Benedikter.pdf
  file_size: 853289
  relation: main_file
file_date_updated: 2020-07-14T12:47:35Z
has_accepted_license: '1'
intvolume: '       374'
isi: 1
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
page: 2097–2150
project:
- _id: 3AC91DDA-15DF-11EA-824D-93A3E7B544D1
  call_identifier: FWF
  name: FWF Open Access Fund
- _id: 25C878CE-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: P27533_N27
  name: Structure of the Excitation Spectrum for Many-Body Quantum Systems
- _id: 25C6DC12-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '694227'
  name: Analysis of quantum many-body systems
publication: Communications in Mathematical Physics
publication_identifier:
  eissn:
  - 1432-0916
  issn:
  - 0010-3616
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Optimal upper bound for the correlation energy of a Fermi gas in the mean-field
  regime
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: 374
year: '2020'
...
---
_id: '80'
abstract:
- lang: eng
  text: 'We consider an interacting, dilute Bose gas trapped in a harmonic potential
    at a positive temperature. The system is analyzed in a combination of a thermodynamic
    and a Gross–Pitaevskii (GP) limit where the trap frequency ω, the temperature
    T, and the particle number N are related by N∼ (T/ ω) 3→ ∞ while the scattering
    length is so small that the interaction energy per particle around the center
    of the trap is of the same order of magnitude as the spectral gap in the trap.
    We prove that the difference between the canonical free energy of the interacting
    gas and the one of the noninteracting system can be obtained by minimizing the
    GP energy functional. We also prove Bose–Einstein condensation in the following
    sense: The one-particle density matrix of any approximate minimizer of the canonical
    free energy functional is to leading order given by that of the noninteracting
    gas but with the free condensate wavefunction replaced by the GP minimizer.'
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Andreas
  full_name: Deuchert, Andreas
  id: 4DA65CD0-F248-11E8-B48F-1D18A9856A87
  last_name: Deuchert
  orcid: 0000-0003-3146-6746
- first_name: Robert
  full_name: Seiringer, Robert
  id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
  last_name: Seiringer
  orcid: 0000-0002-6781-0521
- first_name: Jakob
  full_name: Yngvason, Jakob
  last_name: Yngvason
citation:
  ama: Deuchert A, Seiringer R, Yngvason J. Bose–Einstein condensation in a dilute,
    trapped gas at positive temperature. <i>Communications in Mathematical Physics</i>.
    2019;368(2):723-776. doi:<a href="https://doi.org/10.1007/s00220-018-3239-0">10.1007/s00220-018-3239-0</a>
  apa: Deuchert, A., Seiringer, R., &#38; Yngvason, J. (2019). Bose–Einstein condensation
    in a dilute, trapped gas at positive temperature. <i>Communications in Mathematical
    Physics</i>. Springer. <a href="https://doi.org/10.1007/s00220-018-3239-0">https://doi.org/10.1007/s00220-018-3239-0</a>
  chicago: Deuchert, Andreas, Robert Seiringer, and Jakob Yngvason. “Bose–Einstein
    Condensation in a Dilute, Trapped Gas at Positive Temperature.” <i>Communications
    in Mathematical Physics</i>. Springer, 2019. <a href="https://doi.org/10.1007/s00220-018-3239-0">https://doi.org/10.1007/s00220-018-3239-0</a>.
  ieee: A. Deuchert, R. Seiringer, and J. Yngvason, “Bose–Einstein condensation in
    a dilute, trapped gas at positive temperature,” <i>Communications in Mathematical
    Physics</i>, vol. 368, no. 2. Springer, pp. 723–776, 2019.
  ista: Deuchert A, Seiringer R, Yngvason J. 2019. Bose–Einstein condensation in a
    dilute, trapped gas at positive temperature. Communications in Mathematical Physics.
    368(2), 723–776.
  mla: Deuchert, Andreas, et al. “Bose–Einstein Condensation in a Dilute, Trapped
    Gas at Positive Temperature.” <i>Communications in Mathematical Physics</i>, vol.
    368, no. 2, Springer, 2019, pp. 723–76, doi:<a href="https://doi.org/10.1007/s00220-018-3239-0">10.1007/s00220-018-3239-0</a>.
  short: A. Deuchert, R. Seiringer, J. Yngvason, Communications in Mathematical Physics
    368 (2019) 723–776.
date_created: 2018-12-11T11:44:31Z
date_published: 2019-06-01T00:00:00Z
date_updated: 2023-08-24T14:27:51Z
day: '01'
ddc:
- '530'
department:
- _id: RoSe
doi: 10.1007/s00220-018-3239-0
ec_funded: 1
external_id:
  isi:
  - '000467796800007'
file:
- access_level: open_access
  checksum: c7e9880b43ac726712c1365e9f2f73a6
  content_type: application/pdf
  creator: dernst
  date_created: 2018-12-17T10:34:06Z
  date_updated: 2020-07-14T12:48:07Z
  file_id: '5688'
  file_name: 2018_CommunMathPhys_Deuchert.pdf
  file_size: 893902
  relation: main_file
file_date_updated: 2020-07-14T12:48:07Z
has_accepted_license: '1'
intvolume: '       368'
isi: 1
issue: '2'
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
page: 723-776
project:
- _id: 25C6DC12-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '694227'
  name: Analysis of quantum many-body systems
- _id: 25C878CE-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: P27533_N27
  name: Structure of the Excitation Spectrum for Many-Body Quantum Systems
publication: Communications in Mathematical Physics
publication_status: published
publisher: Springer
publist_id: '7974'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Bose–Einstein condensation in a dilute, trapped gas at positive temperature
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: 368
year: '2019'
...
---
_id: '5856'
abstract:
- lang: eng
  text: We give a bound on the ground-state energy of a system of N non-interacting
    fermions in a three-dimensional cubic box interacting with an impurity particle
    via point interactions. We show that the change in energy compared to the system
    in the absence of the impurity is bounded in terms of the gas density and the
    scattering length of the interaction, independently of N. Our bound holds as long
    as the ratio of the mass of the impurity to the one of the gas particles is larger
    than a critical value m∗ ∗≈ 0.36 , which is the same regime for which we recently
    showed stability of the system.
article_processing_charge: Yes (via OA deal)
article_type: original
arxiv: 1
author:
- first_name: Thomas
  full_name: Moser, Thomas
  id: 2B5FC9A4-F248-11E8-B48F-1D18A9856A87
  last_name: Moser
- first_name: Robert
  full_name: Seiringer, Robert
  id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
  last_name: Seiringer
  orcid: 0000-0002-6781-0521
citation:
  ama: Moser T, Seiringer R. Energy contribution of a point-interacting impurity in
    a Fermi gas. <i>Annales Henri Poincare</i>. 2019;20(4):1325–1365. doi:<a href="https://doi.org/10.1007/s00023-018-00757-0">10.1007/s00023-018-00757-0</a>
  apa: Moser, T., &#38; Seiringer, R. (2019). Energy contribution of a point-interacting
    impurity in a Fermi gas. <i>Annales Henri Poincare</i>. Springer. <a href="https://doi.org/10.1007/s00023-018-00757-0">https://doi.org/10.1007/s00023-018-00757-0</a>
  chicago: Moser, Thomas, and Robert Seiringer. “Energy Contribution of a Point-Interacting
    Impurity in a Fermi Gas.” <i>Annales Henri Poincare</i>. Springer, 2019. <a href="https://doi.org/10.1007/s00023-018-00757-0">https://doi.org/10.1007/s00023-018-00757-0</a>.
  ieee: T. Moser and R. Seiringer, “Energy contribution of a point-interacting impurity
    in a Fermi gas,” <i>Annales Henri Poincare</i>, vol. 20, no. 4. Springer, pp.
    1325–1365, 2019.
  ista: Moser T, Seiringer R. 2019. Energy contribution of a point-interacting impurity
    in a Fermi gas. Annales Henri Poincare. 20(4), 1325–1365.
  mla: Moser, Thomas, and Robert Seiringer. “Energy Contribution of a Point-Interacting
    Impurity in a Fermi Gas.” <i>Annales Henri Poincare</i>, vol. 20, no. 4, Springer,
    2019, pp. 1325–1365, doi:<a href="https://doi.org/10.1007/s00023-018-00757-0">10.1007/s00023-018-00757-0</a>.
  short: T. Moser, R. Seiringer, Annales Henri Poincare 20 (2019) 1325–1365.
date_created: 2019-01-20T22:59:17Z
date_published: 2019-04-01T00:00:00Z
date_updated: 2023-09-07T12:37:42Z
day: '01'
ddc:
- '530'
department:
- _id: RoSe
doi: 10.1007/s00023-018-00757-0
ec_funded: 1
external_id:
  arxiv:
  - '1807.00739'
  isi:
  - '000462444300008'
file:
- access_level: open_access
  checksum: 255e42f957a8e2b10aad2499c750a8d6
  content_type: application/pdf
  creator: dernst
  date_created: 2019-01-28T15:27:17Z
  date_updated: 2020-07-14T12:47:12Z
  file_id: '5894'
  file_name: 2019_Annales_Moser.pdf
  file_size: 859846
  relation: main_file
file_date_updated: 2020-07-14T12:47:12Z
has_accepted_license: '1'
intvolume: '        20'
isi: 1
issue: '4'
language:
- iso: eng
month: '04'
oa: 1
oa_version: Published Version
page: 1325–1365
project:
- _id: 25C6DC12-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '694227'
  name: Analysis of quantum many-body systems
- _id: 25C878CE-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: P27533_N27
  name: Structure of the Excitation Spectrum for Many-Body Quantum Systems
- _id: B67AFEDC-15C9-11EA-A837-991A96BB2854
  name: IST Austria Open Access Fund
publication: Annales Henri Poincare
publication_identifier:
  issn:
  - '14240637'
publication_status: published
publisher: Springer
quality_controlled: '1'
related_material:
  record:
  - id: '52'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: Energy contribution of a point-interacting impurity in a Fermi gas
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: 20
year: '2019'
...
---
_id: '295'
abstract:
- lang: eng
  text: We prove upper and lower bounds on the ground-state energy of the ideal two-dimensional
    anyon gas. Our bounds are extensive in the particle number, as for fermions, and
    linear in the statistics parameter (Formula presented.). The lower bounds extend
    to Lieb–Thirring inequalities for all anyons except bosons.
acknowledgement: Financial support from the Swedish Research Council, grant no. 2013-4734
  (D. L.), the European Research Council (ERC) under the European Union’s Horizon
  2020 research and innovation programme (grant agreement No 694227, R. S.), and by
  the Austrian Science Fund (FWF), project Nr. P 27533-N27 (R. S.), is gratefully
  acknowledged.
article_processing_charge: No
arxiv: 1
author:
- first_name: Douglas
  full_name: Lundholm, Douglas
  last_name: Lundholm
- first_name: Robert
  full_name: Seiringer, Robert
  id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
  last_name: Seiringer
  orcid: 0000-0002-6781-0521
citation:
  ama: Lundholm D, Seiringer R. Fermionic behavior of ideal anyons. <i>Letters in
    Mathematical Physics</i>. 2018;108(11):2523-2541. doi:<a href="https://doi.org/10.1007/s11005-018-1091-y">10.1007/s11005-018-1091-y</a>
  apa: Lundholm, D., &#38; Seiringer, R. (2018). Fermionic behavior of ideal anyons.
    <i>Letters in Mathematical Physics</i>. Springer. <a href="https://doi.org/10.1007/s11005-018-1091-y">https://doi.org/10.1007/s11005-018-1091-y</a>
  chicago: Lundholm, Douglas, and Robert Seiringer. “Fermionic Behavior of Ideal Anyons.”
    <i>Letters in Mathematical Physics</i>. Springer, 2018. <a href="https://doi.org/10.1007/s11005-018-1091-y">https://doi.org/10.1007/s11005-018-1091-y</a>.
  ieee: D. Lundholm and R. Seiringer, “Fermionic behavior of ideal anyons,” <i>Letters
    in Mathematical Physics</i>, vol. 108, no. 11. Springer, pp. 2523–2541, 2018.
  ista: Lundholm D, Seiringer R. 2018. Fermionic behavior of ideal anyons. Letters
    in Mathematical Physics. 108(11), 2523–2541.
  mla: Lundholm, Douglas, and Robert Seiringer. “Fermionic Behavior of Ideal Anyons.”
    <i>Letters in Mathematical Physics</i>, vol. 108, no. 11, Springer, 2018, pp.
    2523–41, doi:<a href="https://doi.org/10.1007/s11005-018-1091-y">10.1007/s11005-018-1091-y</a>.
  short: D. Lundholm, R. Seiringer, Letters in Mathematical Physics 108 (2018) 2523–2541.
date_created: 2018-12-11T11:45:40Z
date_published: 2018-05-11T00:00:00Z
date_updated: 2023-09-11T14:01:57Z
day: '11'
ddc:
- '510'
department:
- _id: RoSe
doi: 10.1007/s11005-018-1091-y
ec_funded: 1
external_id:
  arxiv:
  - '1712.06218'
  isi:
  - '000446491500008'
file:
- access_level: open_access
  checksum: 8beb9632fa41bbd19452f55f31286a31
  content_type: application/pdf
  creator: dernst
  date_created: 2018-12-17T12:14:17Z
  date_updated: 2020-07-14T12:45:55Z
  file_id: '5698'
  file_name: 2018_LettMathPhys_Lundholm.pdf
  file_size: 551996
  relation: main_file
file_date_updated: 2020-07-14T12:45:55Z
has_accepted_license: '1'
intvolume: '       108'
isi: 1
issue: '11'
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
page: 2523-2541
project:
- _id: 25C6DC12-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '694227'
  name: Analysis of quantum many-body systems
- _id: 25C878CE-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: P27533_N27
  name: Structure of the Excitation Spectrum for Many-Body Quantum Systems
publication: Letters in Mathematical Physics
publication_status: published
publisher: Springer
publist_id: '7586'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Fermionic behavior of ideal anyons
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: 108
year: '2018'
...
---
_id: '180'
abstract:
- lang: eng
  text: In this paper we define and study the classical Uniform Electron Gas (UEG),
    a system of infinitely many electrons whose density is constant everywhere in
    space. The UEG is defined differently from Jellium, which has a positive constant
    background but no constraint on the density. We prove that the UEG arises in Density
    Functional Theory in the limit of a slowly varying density, minimizing the indirect
    Coulomb energy. We also construct the quantum UEG and compare it to the classical
    UEG at low density.
acknowledgement: "This project has received funding from the European Research Council
  (ERC) under the European\r\nUnion’s Horizon 2020 research and innovation programme
  (grant agreement 694227 for R.S. and MDFT 725528 for M.L.). Financial support by
  the Austrian Science Fund (FWF), project No P 27533-N27 (R.S.) and by the US National
  Science Foundation, grant No PHY12-1265118 (E.H.L.) are gratefully acknowledged."
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Mathieu
  full_name: Lewi, Mathieu
  last_name: Lewi
- first_name: Élliott
  full_name: Lieb, Élliott
  last_name: Lieb
- first_name: Robert
  full_name: Seiringer, Robert
  id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
  last_name: Seiringer
  orcid: 0000-0002-6781-0521
citation:
  ama: Lewi M, Lieb É, Seiringer R. Statistical mechanics of the uniform electron
    gas. <i>Journal de l’Ecole Polytechnique - Mathematiques</i>. 2018;5:79-116. doi:<a
    href="https://doi.org/10.5802/jep.64">10.5802/jep.64</a>
  apa: Lewi, M., Lieb, É., &#38; Seiringer, R. (2018). Statistical mechanics of the
    uniform electron gas. <i>Journal de l’Ecole Polytechnique - Mathematiques</i>.
    Ecole Polytechnique. <a href="https://doi.org/10.5802/jep.64">https://doi.org/10.5802/jep.64</a>
  chicago: Lewi, Mathieu, Élliott Lieb, and Robert Seiringer. “Statistical Mechanics
    of the Uniform Electron Gas.” <i>Journal de l’Ecole Polytechnique - Mathematiques</i>.
    Ecole Polytechnique, 2018. <a href="https://doi.org/10.5802/jep.64">https://doi.org/10.5802/jep.64</a>.
  ieee: M. Lewi, É. Lieb, and R. Seiringer, “Statistical mechanics of the uniform
    electron gas,” <i>Journal de l’Ecole Polytechnique - Mathematiques</i>, vol. 5.
    Ecole Polytechnique, pp. 79–116, 2018.
  ista: Lewi M, Lieb É, Seiringer R. 2018. Statistical mechanics of the uniform electron
    gas. Journal de l’Ecole Polytechnique - Mathematiques. 5, 79–116.
  mla: Lewi, Mathieu, et al. “Statistical Mechanics of the Uniform Electron Gas.”
    <i>Journal de l’Ecole Polytechnique - Mathematiques</i>, vol. 5, Ecole Polytechnique,
    2018, pp. 79–116, doi:<a href="https://doi.org/10.5802/jep.64">10.5802/jep.64</a>.
  short: M. Lewi, É. Lieb, R. Seiringer, Journal de l’Ecole Polytechnique - Mathematiques
    5 (2018) 79–116.
date_created: 2018-12-11T11:45:03Z
date_published: 2018-07-01T00:00:00Z
date_updated: 2023-10-17T08:05:28Z
day: '01'
ddc:
- '510'
department:
- _id: RoSe
doi: 10.5802/jep.64
ec_funded: 1
external_id:
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  - '1705.10676'
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language:
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month: '07'
oa: 1
oa_version: Published Version
page: 79 - 116
project:
- _id: 25C6DC12-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '694227'
  name: Analysis of quantum many-body systems
- _id: 25C878CE-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: P27533_N27
  name: Structure of the Excitation Spectrum for Many-Body Quantum Systems
publication: Journal de l'Ecole Polytechnique - Mathematiques
publication_identifier:
  eissn:
  - 2270-518X
  issn:
  - 2429-7100
publication_status: published
publisher: Ecole Polytechnique
publist_id: '7741'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Statistical mechanics of the uniform electron gas
tmp:
  image: /image/cc_by_nd.png
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  name: Creative Commons Attribution-NoDerivatives 4.0 International (CC BY-ND 4.0)
  short: CC BY-ND (4.0)
type: journal_article
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volume: 5
year: '2018'
...
---
_id: '52'
abstract:
- lang: eng
  text: In this thesis we will discuss systems of point interacting fermions, their
    stability and other spectral properties. Whereas for bosons a point interacting
    system is always unstable this ques- tion is more subtle for a gas of two species
    of fermions. In particular the answer depends on the mass ratio between these
    two species. Most of this work will be focused on the N + M model which consists
    of two species of fermions with N, M particles respectively which interact via
    point interactions. We will introduce this model using a formal limit and discuss
    the N + 1 system in more detail. In particular, we will show that for mass ratios
    above a critical one, which does not depend on the particle number, the N + 1
    system is stable. In the context of this model we will prove rigorous versions
    of Tan relations which relate various quantities of the point-interacting model.
    By restricting the N + 1 system to a box we define a finite density model with
    point in- teractions. In the context of this system we will discuss the energy
    change when introducing a point-interacting impurity into a system of non-interacting
    fermions. We will see that this change in energy is bounded independently of the
    particle number and in particular the bound only depends on the density and the
    scattering length. As another special case of the N + M model we will show stability
    of the 2 + 2 model for mass ratios in an interval around one. Further we will
    investigate a different model of point interactions which was discussed before
    in the literature and which is, contrary to the N + M model, not given by a limiting
    procedure but is based on a Dirichlet form. We will show that this system behaves
    trivially in the thermodynamic limit, i.e. the free energy per particle is the
    same as the one of the non-interacting system.
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Thomas
  full_name: Moser, Thomas
  id: 2B5FC9A4-F248-11E8-B48F-1D18A9856A87
  last_name: Moser
citation:
  ama: Moser T. Point interactions in systems of fermions. 2018. doi:<a href="https://doi.org/10.15479/AT:ISTA:th_1043">10.15479/AT:ISTA:th_1043</a>
  apa: Moser, T. (2018). <i>Point interactions in systems of fermions</i>. Institute
    of Science and Technology Austria. <a href="https://doi.org/10.15479/AT:ISTA:th_1043">https://doi.org/10.15479/AT:ISTA:th_1043</a>
  chicago: Moser, Thomas. “Point Interactions in Systems of Fermions.” Institute of
    Science and Technology Austria, 2018. <a href="https://doi.org/10.15479/AT:ISTA:th_1043">https://doi.org/10.15479/AT:ISTA:th_1043</a>.
  ieee: T. Moser, “Point interactions in systems of fermions,” Institute of Science
    and Technology Austria, 2018.
  ista: Moser T. 2018. Point interactions in systems of fermions. Institute of Science
    and Technology Austria.
  mla: Moser, Thomas. <i>Point Interactions in Systems of Fermions</i>. Institute
    of Science and Technology Austria, 2018, doi:<a href="https://doi.org/10.15479/AT:ISTA:th_1043">10.15479/AT:ISTA:th_1043</a>.
  short: T. Moser, Point Interactions in Systems of Fermions, Institute of Science
    and Technology Austria, 2018.
date_created: 2018-12-11T11:44:22Z
date_published: 2018-09-04T00:00:00Z
date_updated: 2023-09-27T12:34:14Z
day: '04'
ddc:
- '515'
- '530'
- '519'
degree_awarded: PhD
department:
- _id: RoSe
doi: 10.15479/AT:ISTA:th_1043
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language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
page: '115'
project:
- _id: 25C878CE-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: P27533_N27
  name: Structure of the Excitation Spectrum for Many-Body Quantum Systems
publication_identifier:
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
publist_id: '8002'
pubrep_id: '1043'
related_material:
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    status: public
  - id: '154'
    relation: part_of_dissertation
    status: public
  - id: '1198'
    relation: part_of_dissertation
    status: public
  - id: '741'
    relation: part_of_dissertation
    status: public
status: public
supervisor:
- first_name: Robert
  full_name: Seiringer, Robert
  id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
  last_name: Seiringer
  orcid: 0000-0002-6781-0521
title: Point interactions in systems of fermions
type: dissertation
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2018'
...
---
_id: '554'
abstract:
- lang: eng
  text: We analyse the canonical Bogoliubov free energy functional in three dimensions
    at low temperatures in the dilute limit. We prove existence of a first-order phase
    transition and, in the limit (Formula presented.), we determine the critical temperature
    to be (Formula presented.) to leading order. Here, (Formula presented.) is the
    critical temperature of the free Bose gas, ρ is the density of the gas and a is
    the scattering length of the pair-interaction potential V. We also prove asymptotic
    expansions for the free energy. In particular, we recover the Lee–Huang–Yang formula
    in the limit (Formula presented.).
arxiv: 1
author:
- first_name: Marcin M
  full_name: Napiórkowski, Marcin M
  id: 4197AD04-F248-11E8-B48F-1D18A9856A87
  last_name: Napiórkowski
- first_name: Robin
  full_name: Reuvers, Robin
  last_name: Reuvers
- first_name: Jan
  full_name: Solovej, Jan
  last_name: Solovej
citation:
  ama: 'Napiórkowski MM, Reuvers R, Solovej J. The Bogoliubov free energy functional
    II: The dilute Limit. <i>Communications in Mathematical Physics</i>. 2018;360(1):347-403.
    doi:<a href="https://doi.org/10.1007/s00220-017-3064-x">10.1007/s00220-017-3064-x</a>'
  apa: 'Napiórkowski, M. M., Reuvers, R., &#38; Solovej, J. (2018). The Bogoliubov
    free energy functional II: The dilute Limit. <i>Communications in Mathematical
    Physics</i>. Springer. <a href="https://doi.org/10.1007/s00220-017-3064-x">https://doi.org/10.1007/s00220-017-3064-x</a>'
  chicago: 'Napiórkowski, Marcin M, Robin Reuvers, and Jan Solovej. “The Bogoliubov
    Free Energy Functional II: The Dilute Limit.” <i>Communications in Mathematical
    Physics</i>. Springer, 2018. <a href="https://doi.org/10.1007/s00220-017-3064-x">https://doi.org/10.1007/s00220-017-3064-x</a>.'
  ieee: 'M. M. Napiórkowski, R. Reuvers, and J. Solovej, “The Bogoliubov free energy
    functional II: The dilute Limit,” <i>Communications in Mathematical Physics</i>,
    vol. 360, no. 1. Springer, pp. 347–403, 2018.'
  ista: 'Napiórkowski MM, Reuvers R, Solovej J. 2018. The Bogoliubov free energy functional
    II: The dilute Limit. Communications in Mathematical Physics. 360(1), 347–403.'
  mla: 'Napiórkowski, Marcin M., et al. “The Bogoliubov Free Energy Functional II:
    The Dilute Limit.” <i>Communications in Mathematical Physics</i>, vol. 360, no.
    1, Springer, 2018, pp. 347–403, doi:<a href="https://doi.org/10.1007/s00220-017-3064-x">10.1007/s00220-017-3064-x</a>.'
  short: M.M. Napiórkowski, R. Reuvers, J. Solovej, Communications in Mathematical
    Physics 360 (2018) 347–403.
date_created: 2018-12-11T11:47:09Z
date_published: 2018-05-01T00:00:00Z
date_updated: 2021-01-12T08:02:35Z
day: '01'
department:
- _id: RoSe
doi: 10.1007/s00220-017-3064-x
external_id:
  arxiv:
  - '1511.05953'
intvolume: '       360'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/1511.05953
month: '05'
oa: 1
oa_version: Submitted Version
page: 347-403
project:
- _id: 25C878CE-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: P27533_N27
  name: Structure of the Excitation Spectrum for Many-Body Quantum Systems
publication: Communications in Mathematical Physics
publication_identifier:
  issn:
  - '00103616'
publication_status: published
publisher: Springer
publist_id: '7260'
quality_controlled: '1'
scopus_import: 1
status: public
title: 'The Bogoliubov free energy functional II: The dilute Limit'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 360
year: '2018'
...
---
_id: '6002'
abstract:
- lang: eng
  text: The Bogoliubov free energy functional is analysed. The functional serves as
    a model of a translation-invariant Bose gas at positive temperature. We prove
    the existence of minimizers in the case of repulsive interactions given by a sufficiently
    regular two-body potential. Furthermore, we prove the existence of a phase transition
    in this model and provide its phase diagram.
article_processing_charge: No
arxiv: 1
author:
- first_name: Marcin M
  full_name: Napiórkowski, Marcin M
  id: 4197AD04-F248-11E8-B48F-1D18A9856A87
  last_name: Napiórkowski
- first_name: Robin
  full_name: Reuvers, Robin
  last_name: Reuvers
- first_name: Jan Philip
  full_name: Solovej, Jan Philip
  last_name: Solovej
citation:
  ama: 'Napiórkowski MM, Reuvers R, Solovej JP. The Bogoliubov free energy functional
    I: Existence of minimizers and phase diagram. <i>Archive for Rational Mechanics
    and Analysis</i>. 2018;229(3):1037-1090. doi:<a href="https://doi.org/10.1007/s00205-018-1232-6">10.1007/s00205-018-1232-6</a>'
  apa: 'Napiórkowski, M. M., Reuvers, R., &#38; Solovej, J. P. (2018). The Bogoliubov
    free energy functional I: Existence of minimizers and phase diagram. <i>Archive
    for Rational Mechanics and Analysis</i>. Springer Nature. <a href="https://doi.org/10.1007/s00205-018-1232-6">https://doi.org/10.1007/s00205-018-1232-6</a>'
  chicago: 'Napiórkowski, Marcin M, Robin Reuvers, and Jan Philip Solovej. “The Bogoliubov
    Free Energy Functional I: Existence of Minimizers and Phase Diagram.” <i>Archive
    for Rational Mechanics and Analysis</i>. Springer Nature, 2018. <a href="https://doi.org/10.1007/s00205-018-1232-6">https://doi.org/10.1007/s00205-018-1232-6</a>.'
  ieee: 'M. M. Napiórkowski, R. Reuvers, and J. P. Solovej, “The Bogoliubov free energy
    functional I: Existence of minimizers and phase diagram,” <i>Archive for Rational
    Mechanics and Analysis</i>, vol. 229, no. 3. Springer Nature, pp. 1037–1090, 2018.'
  ista: 'Napiórkowski MM, Reuvers R, Solovej JP. 2018. The Bogoliubov free energy
    functional I: Existence of minimizers and phase diagram. Archive for Rational
    Mechanics and Analysis. 229(3), 1037–1090.'
  mla: 'Napiórkowski, Marcin M., et al. “The Bogoliubov Free Energy Functional I:
    Existence of Minimizers and Phase Diagram.” <i>Archive for Rational Mechanics
    and Analysis</i>, vol. 229, no. 3, Springer Nature, 2018, pp. 1037–90, doi:<a
    href="https://doi.org/10.1007/s00205-018-1232-6">10.1007/s00205-018-1232-6</a>.'
  short: M.M. Napiórkowski, R. Reuvers, J.P. Solovej, Archive for Rational Mechanics
    and Analysis 229 (2018) 1037–1090.
date_created: 2019-02-14T13:40:53Z
date_published: 2018-09-01T00:00:00Z
date_updated: 2023-09-19T14:33:12Z
day: '01'
department:
- _id: RoSe
doi: 10.1007/s00205-018-1232-6
external_id:
  arxiv:
  - '1511.05935'
  isi:
  - '000435367300003'
intvolume: '       229'
isi: 1
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/1511.05935
month: '09'
oa: 1
oa_version: Preprint
page: 1037-1090
project:
- _id: 25C878CE-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: P27533_N27
  name: Structure of the Excitation Spectrum for Many-Body Quantum Systems
publication: Archive for Rational Mechanics and Analysis
publication_identifier:
  eissn:
  - 1432-0673
  issn:
  - 0003-9527
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'The Bogoliubov free energy functional I: Existence of minimizers and phase
  diagram'
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 229
year: '2018'
...
---
_id: '154'
abstract:
- lang: eng
  text: We give a lower bound on the ground state energy of a system of two fermions
    of one species interacting with two fermions of another species via point interactions.
    We show that there is a critical mass ratio m2 ≈ 0.58 such that the system is
    stable, i.e., the energy is bounded from below, for m∈[m2,m2−1]. So far it was
    not known whether this 2 + 2 system exhibits a stable region at all or whether
    the formation of four-body bound states causes an unbounded spectrum for all mass
    ratios, similar to the Thomas effect. Our result gives further evidence for the
    stability of the more general N + M system.
acknowledgement: Open access funding provided by Austrian Science Fund (FWF).
article_number: '19'
article_processing_charge: No
article_type: original
author:
- first_name: Thomas
  full_name: Moser, Thomas
  id: 2B5FC9A4-F248-11E8-B48F-1D18A9856A87
  last_name: Moser
- first_name: Robert
  full_name: Seiringer, Robert
  id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
  last_name: Seiringer
  orcid: 0000-0002-6781-0521
citation:
  ama: Moser T, Seiringer R. Stability of the 2+2 fermionic system with point interactions.
    <i>Mathematical Physics Analysis and Geometry</i>. 2018;21(3). doi:<a href="https://doi.org/10.1007/s11040-018-9275-3">10.1007/s11040-018-9275-3</a>
  apa: Moser, T., &#38; Seiringer, R. (2018). Stability of the 2+2 fermionic system
    with point interactions. <i>Mathematical Physics Analysis and Geometry</i>. Springer.
    <a href="https://doi.org/10.1007/s11040-018-9275-3">https://doi.org/10.1007/s11040-018-9275-3</a>
  chicago: Moser, Thomas, and Robert Seiringer. “Stability of the 2+2 Fermionic System
    with Point Interactions.” <i>Mathematical Physics Analysis and Geometry</i>. Springer,
    2018. <a href="https://doi.org/10.1007/s11040-018-9275-3">https://doi.org/10.1007/s11040-018-9275-3</a>.
  ieee: T. Moser and R. Seiringer, “Stability of the 2+2 fermionic system with point
    interactions,” <i>Mathematical Physics Analysis and Geometry</i>, vol. 21, no.
    3. Springer, 2018.
  ista: Moser T, Seiringer R. 2018. Stability of the 2+2 fermionic system with point
    interactions. Mathematical Physics Analysis and Geometry. 21(3), 19.
  mla: Moser, Thomas, and Robert Seiringer. “Stability of the 2+2 Fermionic System
    with Point Interactions.” <i>Mathematical Physics Analysis and Geometry</i>, vol.
    21, no. 3, 19, Springer, 2018, doi:<a href="https://doi.org/10.1007/s11040-018-9275-3">10.1007/s11040-018-9275-3</a>.
  short: T. Moser, R. Seiringer, Mathematical Physics Analysis and Geometry 21 (2018).
date_created: 2018-12-11T11:44:55Z
date_published: 2018-09-01T00:00:00Z
date_updated: 2023-09-19T09:31:15Z
day: '01'
ddc:
- '530'
department:
- _id: RoSe
doi: 10.1007/s11040-018-9275-3
ec_funded: 1
external_id:
  isi:
  - '000439639700001'
file:
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  file_id: '5729'
  file_name: 2018_MathPhysics_Moser.pdf
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has_accepted_license: '1'
intvolume: '        21'
isi: 1
issue: '3'
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- iso: eng
month: '09'
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: 25C878CE-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: P27533_N27
  name: Structure of the Excitation Spectrum for Many-Body Quantum Systems
- _id: 3AC91DDA-15DF-11EA-824D-93A3E7B544D1
  call_identifier: FWF
  name: FWF Open Access Fund
publication: Mathematical Physics Analysis and Geometry
publication_identifier:
  eissn:
  - '15729656'
  issn:
  - '13850172'
publication_status: published
publisher: Springer
publist_id: '7767'
quality_controlled: '1'
related_material:
  record:
  - id: '52'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: Stability of the 2+2 fermionic system with point interactions
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: 21
year: '2018'
...
---
_id: '399'
abstract:
- lang: eng
  text: Following an earlier calculation in 3D, we calculate the 2D critical temperature
    of a dilute, translation-invariant Bose gas using a variational formulation of
    the Bogoliubov approximation introduced by Critchley and Solomon in 1976. This
    provides the first analytical calculation of the Kosterlitz-Thouless transition
    temperature that includes the constant in the logarithm.
acknowledgement: We thank Robert Seiringer and Daniel Ueltschi for bringing the issue
  of the change in critical temperature to our attention. We also thank the Erwin
  Schrödinger Institute (all authors) and the Department of Mathematics, University
  of Copenhagen (MN) for the hospitality during the period this work was carried out.
  We gratefully acknowledge the financial support by the European Unions Seventh Framework
  Programme under the ERC Grant Agreement Nos. 321029 (JPS and RR) and 337603 (RR)
  as well as support by the VIL-LUM FONDEN via the QMATH Centre of Excellence (Grant
  No. 10059) (JPS and RR), by the National Science Center (NCN) under grant No. 2016/21/D/ST1/02430
  and the Austrian Science Fund (FWF) through project No. P 27533-N27 (MN).
article_number: '10007'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Marcin M
  full_name: Napiórkowski, Marcin M
  id: 4197AD04-F248-11E8-B48F-1D18A9856A87
  last_name: Napiórkowski
- first_name: Robin
  full_name: Reuvers, Robin
  last_name: Reuvers
- first_name: Jan
  full_name: Solovej, Jan
  last_name: Solovej
citation:
  ama: Napiórkowski MM, Reuvers R, Solovej J. Calculation of the critical temperature
    of a dilute Bose gas in the Bogoliubov approximation. <i>EPL</i>. 2018;121(1).
    doi:<a href="https://doi.org/10.1209/0295-5075/121/10007">10.1209/0295-5075/121/10007</a>
  apa: Napiórkowski, M. M., Reuvers, R., &#38; Solovej, J. (2018). Calculation of
    the critical temperature of a dilute Bose gas in the Bogoliubov approximation.
    <i>EPL</i>. IOP Publishing Ltd. <a href="https://doi.org/10.1209/0295-5075/121/10007">https://doi.org/10.1209/0295-5075/121/10007</a>
  chicago: Napiórkowski, Marcin M, Robin Reuvers, and Jan Solovej. “Calculation of
    the Critical Temperature of a Dilute Bose Gas in the Bogoliubov Approximation.”
    <i>EPL</i>. IOP Publishing Ltd., 2018. <a href="https://doi.org/10.1209/0295-5075/121/10007">https://doi.org/10.1209/0295-5075/121/10007</a>.
  ieee: M. M. Napiórkowski, R. Reuvers, and J. Solovej, “Calculation of the critical
    temperature of a dilute Bose gas in the Bogoliubov approximation,” <i>EPL</i>,
    vol. 121, no. 1. IOP Publishing Ltd., 2018.
  ista: Napiórkowski MM, Reuvers R, Solovej J. 2018. Calculation of the critical temperature
    of a dilute Bose gas in the Bogoliubov approximation. EPL. 121(1), 10007.
  mla: Napiórkowski, Marcin M., et al. “Calculation of the Critical Temperature of
    a Dilute Bose Gas in the Bogoliubov Approximation.” <i>EPL</i>, vol. 121, no.
    1, 10007, IOP Publishing Ltd., 2018, doi:<a href="https://doi.org/10.1209/0295-5075/121/10007">10.1209/0295-5075/121/10007</a>.
  short: M.M. Napiórkowski, R. Reuvers, J. Solovej, EPL 121 (2018).
date_created: 2018-12-11T11:46:15Z
date_published: 2018-01-01T00:00:00Z
date_updated: 2023-09-08T13:30:51Z
day: '01'
department:
- _id: RoSe
doi: 10.1209/0295-5075/121/10007
external_id:
  arxiv:
  - '1706.01822'
  isi:
  - '000460003000003'
intvolume: '       121'
isi: 1
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/1706.01822
month: '01'
oa: 1
oa_version: Preprint
project:
- _id: 25C878CE-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: P27533_N27
  name: Structure of the Excitation Spectrum for Many-Body Quantum Systems
publication: EPL
publication_status: published
publisher: IOP Publishing Ltd.
publist_id: '7432'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Calculation of the critical temperature of a dilute Bose gas in the Bogoliubov
  approximation
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 121
year: '2018'
...
---
_id: '1079'
abstract:
- lang: eng
  text: We study the ionization problem in the Thomas-Fermi-Dirac-von Weizsäcker theory
    for atoms and molecules. We prove the nonexistence of minimizers for the energy
    functional when the number of electrons is large and the total nuclear charge
    is small. This nonexistence result also applies to external potentials decaying
    faster than the Coulomb potential. In the case of arbitrary nuclear charges, we
    obtain the nonexistence of stable minimizers and radial minimizers.
article_number: '6'
article_processing_charge: No
author:
- first_name: Phan
  full_name: Nam, Phan
  id: 404092F4-F248-11E8-B48F-1D18A9856A87
  last_name: Nam
- first_name: Hanne
  full_name: Van Den Bosch, Hanne
  last_name: Van Den Bosch
citation:
  ama: Nam P, Van Den Bosch H. Nonexistence in Thomas Fermi-Dirac-von Weizsäcker theory
    with small nuclear charges. <i>Mathematical Physics, Analysis and Geometry</i>.
    2017;20(2). doi:<a href="https://doi.org/10.1007/s11040-017-9238-0">10.1007/s11040-017-9238-0</a>
  apa: Nam, P., &#38; Van Den Bosch, H. (2017). Nonexistence in Thomas Fermi-Dirac-von
    Weizsäcker theory with small nuclear charges. <i>Mathematical Physics, Analysis
    and Geometry</i>. Springer. <a href="https://doi.org/10.1007/s11040-017-9238-0">https://doi.org/10.1007/s11040-017-9238-0</a>
  chicago: Nam, Phan, and Hanne Van Den Bosch. “Nonexistence in Thomas Fermi-Dirac-von
    Weizsäcker Theory with Small Nuclear Charges.” <i>Mathematical Physics, Analysis
    and Geometry</i>. Springer, 2017. <a href="https://doi.org/10.1007/s11040-017-9238-0">https://doi.org/10.1007/s11040-017-9238-0</a>.
  ieee: P. Nam and H. Van Den Bosch, “Nonexistence in Thomas Fermi-Dirac-von Weizsäcker
    theory with small nuclear charges,” <i>Mathematical Physics, Analysis and Geometry</i>,
    vol. 20, no. 2. Springer, 2017.
  ista: Nam P, Van Den Bosch H. 2017. Nonexistence in Thomas Fermi-Dirac-von Weizsäcker
    theory with small nuclear charges. Mathematical Physics, Analysis and Geometry.
    20(2), 6.
  mla: Nam, Phan, and Hanne Van Den Bosch. “Nonexistence in Thomas Fermi-Dirac-von
    Weizsäcker Theory with Small Nuclear Charges.” <i>Mathematical Physics, Analysis
    and Geometry</i>, vol. 20, no. 2, 6, Springer, 2017, doi:<a href="https://doi.org/10.1007/s11040-017-9238-0">10.1007/s11040-017-9238-0</a>.
  short: P. Nam, H. Van Den Bosch, Mathematical Physics, Analysis and Geometry 20
    (2017).
date_created: 2018-12-11T11:50:02Z
date_published: 2017-06-01T00:00:00Z
date_updated: 2023-09-20T11:53:35Z
day: '01'
department:
- _id: RoSe
doi: 10.1007/s11040-017-9238-0
external_id:
  isi:
  - '000401270000004'
intvolume: '        20'
isi: 1
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/1603.07368
month: '06'
oa: 1
oa_version: Submitted Version
project:
- _id: 25C878CE-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: P27533_N27
  name: Structure of the Excitation Spectrum for Many-Body Quantum Systems
publication: Mathematical Physics, Analysis and Geometry
publication_identifier:
  issn:
  - '13850172'
publication_status: published
publisher: Springer
publist_id: '6300'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Nonexistence in Thomas Fermi-Dirac-von Weizsäcker theory with small nuclear
  charges
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 20
year: '2017'
...
---
_id: '1120'
abstract:
- lang: eng
  text: 'The existence of a self-localization transition in the polaron problem has
    been under an active debate ever since Landau suggested it 83 years ago. Here
    we reveal the self-localization transition for the rotational analogue of the
    polaron -- the angulon quasiparticle. We show that, unlike for the polarons, self-localization
    of angulons occurs at finite impurity-bath coupling already at the mean-field
    level. The transition is accompanied by the spherical-symmetry breaking of the
    angulon ground state and a discontinuity in the first derivative of the ground-state
    energy. Moreover, the type of the symmetry breaking is dictated by the symmetry
    of the microscopic impurity-bath interaction, which leads to a number of distinct
    self-localized states. The predicted effects can potentially be addressed in experiments
    on cold molecules trapped in superfluid helium droplets and ultracold quantum
    gases, as well as on electronic excitations in solids and Bose-Einstein condensates. '
article_number: '033608'
article_processing_charge: No
author:
- first_name: Xiang
  full_name: Li, Xiang
  id: 4B7E523C-F248-11E8-B48F-1D18A9856A87
  last_name: Li
- first_name: Robert
  full_name: Seiringer, Robert
  id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
  last_name: Seiringer
  orcid: 0000-0002-6781-0521
- first_name: Mikhail
  full_name: Lemeshko, Mikhail
  id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
  last_name: Lemeshko
  orcid: 0000-0002-6990-7802
citation:
  ama: Li X, Seiringer R, Lemeshko M. Angular self-localization of impurities rotating
    in a bosonic bath. <i>Physical Review A</i>. 2017;95(3). doi:<a href="https://doi.org/10.1103/PhysRevA.95.033608">10.1103/PhysRevA.95.033608</a>
  apa: Li, X., Seiringer, R., &#38; Lemeshko, M. (2017). Angular self-localization
    of impurities rotating in a bosonic bath. <i>Physical Review A</i>. American Physical
    Society. <a href="https://doi.org/10.1103/PhysRevA.95.033608">https://doi.org/10.1103/PhysRevA.95.033608</a>
  chicago: Li, Xiang, Robert Seiringer, and Mikhail Lemeshko. “Angular Self-Localization
    of Impurities Rotating in a Bosonic Bath.” <i>Physical Review A</i>. American
    Physical Society, 2017. <a href="https://doi.org/10.1103/PhysRevA.95.033608">https://doi.org/10.1103/PhysRevA.95.033608</a>.
  ieee: X. Li, R. Seiringer, and M. Lemeshko, “Angular self-localization of impurities
    rotating in a bosonic bath,” <i>Physical Review A</i>, vol. 95, no. 3. American
    Physical Society, 2017.
  ista: Li X, Seiringer R, Lemeshko M. 2017. Angular self-localization of impurities
    rotating in a bosonic bath. Physical Review A. 95(3), 033608.
  mla: Li, Xiang, et al. “Angular Self-Localization of Impurities Rotating in a Bosonic
    Bath.” <i>Physical Review A</i>, vol. 95, no. 3, 033608, American Physical Society,
    2017, doi:<a href="https://doi.org/10.1103/PhysRevA.95.033608">10.1103/PhysRevA.95.033608</a>.
  short: X. Li, R. Seiringer, M. Lemeshko, Physical Review A 95 (2017).
date_created: 2018-12-11T11:50:15Z
date_published: 2017-03-06T00:00:00Z
date_updated: 2023-09-20T11:30:58Z
day: '06'
department:
- _id: MiLe
- _id: RoSe
doi: 10.1103/PhysRevA.95.033608
ec_funded: 1
external_id:
  isi:
  - '000395981900009'
intvolume: '        95'
isi: 1
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/1610.04908
month: '03'
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: 25C878CE-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: P27533_N27
  name: Structure of the Excitation Spectrum for Many-Body Quantum Systems
- _id: 26031614-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: P29902
  name: Quantum rotations in the presence of a many-body environment
publication: Physical Review A
publication_identifier:
  issn:
  - '24699926'
publication_status: published
publisher: American Physical Society
publist_id: '6242'
quality_controlled: '1'
related_material:
  record:
  - id: '8958'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: Angular self-localization of impurities rotating in a bosonic bath
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 95
year: '2017'
...
---
_id: '739'
abstract:
- lang: eng
  text: We study the norm approximation to the Schrödinger dynamics of N bosons in
    with an interaction potential of the form . Assuming that in the initial state
    the particles outside of the condensate form a quasi-free state with finite kinetic
    energy, we show that in the large N limit, the fluctuations around the condensate
    can be effectively described using Bogoliubov approximation for all . The range
    of β is expected to be optimal for this large class of initial states.
article_processing_charge: No
author:
- first_name: Phan
  full_name: Nam, Phan
  id: 404092F4-F248-11E8-B48F-1D18A9856A87
  last_name: Nam
- first_name: Marcin M
  full_name: Napiórkowski, Marcin M
  id: 4197AD04-F248-11E8-B48F-1D18A9856A87
  last_name: Napiórkowski
citation:
  ama: Nam P, Napiórkowski MM. A note on the validity of Bogoliubov correction to
    mean field dynamics. <i>Journal de Mathématiques Pures et Appliquées</i>. 2017;108(5):662-688.
    doi:<a href="https://doi.org/10.1016/j.matpur.2017.05.013">10.1016/j.matpur.2017.05.013</a>
  apa: Nam, P., &#38; Napiórkowski, M. M. (2017). A note on the validity of Bogoliubov
    correction to mean field dynamics. <i>Journal de Mathématiques Pures et Appliquées</i>.
    Elsevier. <a href="https://doi.org/10.1016/j.matpur.2017.05.013">https://doi.org/10.1016/j.matpur.2017.05.013</a>
  chicago: Nam, Phan, and Marcin M Napiórkowski. “A Note on the Validity of Bogoliubov
    Correction to Mean Field Dynamics.” <i>Journal de Mathématiques Pures et Appliquées</i>.
    Elsevier, 2017. <a href="https://doi.org/10.1016/j.matpur.2017.05.013">https://doi.org/10.1016/j.matpur.2017.05.013</a>.
  ieee: P. Nam and M. M. Napiórkowski, “A note on the validity of Bogoliubov correction
    to mean field dynamics,” <i>Journal de Mathématiques Pures et Appliquées</i>,
    vol. 108, no. 5. Elsevier, pp. 662–688, 2017.
  ista: Nam P, Napiórkowski MM. 2017. A note on the validity of Bogoliubov correction
    to mean field dynamics. Journal de Mathématiques Pures et Appliquées. 108(5),
    662–688.
  mla: Nam, Phan, and Marcin M. Napiórkowski. “A Note on the Validity of Bogoliubov
    Correction to Mean Field Dynamics.” <i>Journal de Mathématiques Pures et Appliquées</i>,
    vol. 108, no. 5, Elsevier, 2017, pp. 662–88, doi:<a href="https://doi.org/10.1016/j.matpur.2017.05.013">10.1016/j.matpur.2017.05.013</a>.
  short: P. Nam, M.M. Napiórkowski, Journal de Mathématiques Pures et Appliquées 108
    (2017) 662–688.
date_created: 2018-12-11T11:48:15Z
date_published: 2017-11-01T00:00:00Z
date_updated: 2023-09-27T12:52:07Z
day: '01'
department:
- _id: RoSe
doi: 10.1016/j.matpur.2017.05.013
external_id:
  isi:
  - '000414113600003'
intvolume: '       108'
isi: 1
issue: '5'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/1604.05240
month: '11'
oa: 1
oa_version: Submitted Version
page: 662 - 688
project:
- _id: 25C878CE-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: P27533_N27
  name: Structure of the Excitation Spectrum for Many-Body Quantum Systems
publication: Journal de Mathématiques Pures et Appliquées
publication_identifier:
  issn:
  - '00217824'
publication_status: published
publisher: Elsevier
publist_id: '6928'
quality_controlled: '1'
scopus_import: '1'
status: public
title: A note on the validity of Bogoliubov correction to mean field dynamics
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 108
year: '2017'
...
---
_id: '741'
abstract:
- lang: eng
  text: We prove that a system of N fermions interacting with an additional particle
    via point interactions is stable if the ratio of the mass of the additional particle
    to the one of the fermions is larger than some critical m*. The value of m* is
    independent of N and turns out to be less than 1. This fact has important implications
    for the stability of the unitary Fermi gas. We also characterize the domain of
    the Hamiltonian of this model, and establish the validity of the Tan relations
    for all wave functions in the domain.
article_processing_charge: No
author:
- first_name: Thomas
  full_name: Moser, Thomas
  id: 2B5FC9A4-F248-11E8-B48F-1D18A9856A87
  last_name: Moser
- first_name: Robert
  full_name: Seiringer, Robert
  id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
  last_name: Seiringer
  orcid: 0000-0002-6781-0521
citation:
  ama: Moser T, Seiringer R. Stability of a fermionic N+1 particle system with point
    interactions. <i>Communications in Mathematical Physics</i>. 2017;356(1):329-355.
    doi:<a href="https://doi.org/10.1007/s00220-017-2980-0">10.1007/s00220-017-2980-0</a>
  apa: Moser, T., &#38; Seiringer, R. (2017). Stability of a fermionic N+1 particle
    system with point interactions. <i>Communications in Mathematical Physics</i>.
    Springer. <a href="https://doi.org/10.1007/s00220-017-2980-0">https://doi.org/10.1007/s00220-017-2980-0</a>
  chicago: Moser, Thomas, and Robert Seiringer. “Stability of a Fermionic N+1 Particle
    System with Point Interactions.” <i>Communications in Mathematical Physics</i>.
    Springer, 2017. <a href="https://doi.org/10.1007/s00220-017-2980-0">https://doi.org/10.1007/s00220-017-2980-0</a>.
  ieee: T. Moser and R. Seiringer, “Stability of a fermionic N+1 particle system with
    point interactions,” <i>Communications in Mathematical Physics</i>, vol. 356,
    no. 1. Springer, pp. 329–355, 2017.
  ista: Moser T, Seiringer R. 2017. Stability of a fermionic N+1 particle system with
    point interactions. Communications in Mathematical Physics. 356(1), 329–355.
  mla: Moser, Thomas, and Robert Seiringer. “Stability of a Fermionic N+1 Particle
    System with Point Interactions.” <i>Communications in Mathematical Physics</i>,
    vol. 356, no. 1, Springer, 2017, pp. 329–55, doi:<a href="https://doi.org/10.1007/s00220-017-2980-0">10.1007/s00220-017-2980-0</a>.
  short: T. Moser, R. Seiringer, Communications in Mathematical Physics 356 (2017)
    329–355.
date_created: 2018-12-11T11:48:15Z
date_published: 2017-11-01T00:00:00Z
date_updated: 2023-09-27T12:34:15Z
day: '01'
ddc:
- '539'
department:
- _id: RoSe
doi: 10.1007/s00220-017-2980-0
ec_funded: 1
external_id:
  isi:
  - '000409821300010'
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  date_created: 2018-12-12T10:10:50Z
  date_updated: 2020-07-14T12:47:57Z
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  file_name: IST-2017-880-v1+1_s00220-017-2980-0.pdf
  file_size: 952639
  relation: main_file
file_date_updated: 2020-07-14T12:47:57Z
has_accepted_license: '1'
intvolume: '       356'
isi: 1
issue: '1'
language:
- iso: eng
month: '11'
oa: 1
oa_version: Published Version
page: 329 - 355
project:
- _id: 25C6DC12-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '694227'
  name: Analysis of quantum many-body systems
- _id: 25C878CE-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: P27533_N27
  name: Structure of the Excitation Spectrum for Many-Body Quantum Systems
publication: Communications in Mathematical Physics
publication_identifier:
  issn:
  - '00103616'
publication_status: published
publisher: Springer
publist_id: '6926'
pubrep_id: '880'
quality_controlled: '1'
related_material:
  record:
  - id: '52'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: Stability of a fermionic N+1 particle system with point interactions
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: 356
year: '2017'
...
---
_id: '484'
abstract:
- lang: eng
  text: We consider the dynamics of a large quantum system of N identical bosons in
    3D interacting via a two-body potential of the form N3β-1w(Nβ(x - y)). For fixed
    0 = β &lt; 1/3 and large N, we obtain a norm approximation to the many-body evolution
    in the Nparticle Hilbert space. The leading order behaviour of the dynamics is
    determined by Hartree theory while the second order is given by Bogoliubov theory.
author:
- first_name: Phan
  full_name: Nam, Phan
  id: 404092F4-F248-11E8-B48F-1D18A9856A87
  last_name: Nam
- first_name: Marcin M
  full_name: Napiórkowski, Marcin M
  id: 4197AD04-F248-11E8-B48F-1D18A9856A87
  last_name: Napiórkowski
citation:
  ama: Nam P, Napiórkowski MM. Bogoliubov correction to the mean-field dynamics of
    interacting bosons. <i>Advances in Theoretical and Mathematical Physics</i>. 2017;21(3):683-738.
    doi:<a href="https://doi.org/10.4310/ATMP.2017.v21.n3.a4">10.4310/ATMP.2017.v21.n3.a4</a>
  apa: Nam, P., &#38; Napiórkowski, M. M. (2017). Bogoliubov correction to the mean-field
    dynamics of interacting bosons. <i>Advances in Theoretical and Mathematical Physics</i>.
    International Press. <a href="https://doi.org/10.4310/ATMP.2017.v21.n3.a4">https://doi.org/10.4310/ATMP.2017.v21.n3.a4</a>
  chicago: Nam, Phan, and Marcin M Napiórkowski. “Bogoliubov Correction to the Mean-Field
    Dynamics of Interacting Bosons.” <i>Advances in Theoretical and Mathematical Physics</i>.
    International Press, 2017. <a href="https://doi.org/10.4310/ATMP.2017.v21.n3.a4">https://doi.org/10.4310/ATMP.2017.v21.n3.a4</a>.
  ieee: P. Nam and M. M. Napiórkowski, “Bogoliubov correction to the mean-field dynamics
    of interacting bosons,” <i>Advances in Theoretical and Mathematical Physics</i>,
    vol. 21, no. 3. International Press, pp. 683–738, 2017.
  ista: Nam P, Napiórkowski MM. 2017. Bogoliubov correction to the mean-field dynamics
    of interacting bosons. Advances in Theoretical and Mathematical Physics. 21(3),
    683–738.
  mla: Nam, Phan, and Marcin M. Napiórkowski. “Bogoliubov Correction to the Mean-Field
    Dynamics of Interacting Bosons.” <i>Advances in Theoretical and Mathematical Physics</i>,
    vol. 21, no. 3, International Press, 2017, pp. 683–738, doi:<a href="https://doi.org/10.4310/ATMP.2017.v21.n3.a4">10.4310/ATMP.2017.v21.n3.a4</a>.
  short: P. Nam, M.M. Napiórkowski, Advances in Theoretical and Mathematical Physics
    21 (2017) 683–738.
date_created: 2018-12-11T11:46:43Z
date_published: 2017-01-01T00:00:00Z
date_updated: 2021-01-12T08:00:58Z
day: '01'
department:
- _id: RoSe
doi: 10.4310/ATMP.2017.v21.n3.a4
ec_funded: 1
intvolume: '        21'
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/1509.04631
month: '01'
oa: 1
oa_version: Submitted Version
page: 683 - 738
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '291734'
  name: International IST Postdoc Fellowship Programme
- _id: 25C878CE-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: P27533_N27
  name: Structure of the Excitation Spectrum for Many-Body Quantum Systems
publication: Advances in Theoretical and Mathematical Physics
publication_identifier:
  issn:
  - '10950761'
publication_status: published
publisher: International Press
publist_id: '7336'
quality_controlled: '1'
scopus_import: 1
status: public
title: Bogoliubov correction to the mean-field dynamics of interacting bosons
type: journal_article
user_id: 4435EBFC-F248-11E8-B48F-1D18A9856A87
volume: 21
year: '2017'
...
---
_id: '1198'
abstract:
- lang: eng
  text: We consider a model of fermions interacting via point interactions, defined
    via a certain weighted Dirichlet form. While for two particles the interaction
    corresponds to infinite scattering length, the presence of further particles effectively
    decreases the interaction strength. We show that the model becomes trivial in
    the thermodynamic limit, in the sense that the free energy density at any given
    particle density and temperature agrees with the corresponding expression for
    non-interacting particles.
acknowledgement: 'Open access funding provided by Institute of Science and Technology
  (IST Austria). '
article_processing_charge: Yes (via OA deal)
author:
- first_name: Thomas
  full_name: Moser, Thomas
  id: 2B5FC9A4-F248-11E8-B48F-1D18A9856A87
  last_name: Moser
- first_name: Robert
  full_name: Seiringer, Robert
  id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
  last_name: Seiringer
  orcid: 0000-0002-6781-0521
citation:
  ama: Moser T, Seiringer R. Triviality of a model of particles with point interactions
    in the thermodynamic limit. <i>Letters in Mathematical Physics</i>. 2017;107(3):533-552.
    doi:<a href="https://doi.org/10.1007/s11005-016-0915-x">10.1007/s11005-016-0915-x</a>
  apa: Moser, T., &#38; Seiringer, R. (2017). Triviality of a model of particles with
    point interactions in the thermodynamic limit. <i>Letters in Mathematical Physics</i>.
    Springer. <a href="https://doi.org/10.1007/s11005-016-0915-x">https://doi.org/10.1007/s11005-016-0915-x</a>
  chicago: Moser, Thomas, and Robert Seiringer. “Triviality of a Model of Particles
    with Point Interactions in the Thermodynamic Limit.” <i>Letters in Mathematical
    Physics</i>. Springer, 2017. <a href="https://doi.org/10.1007/s11005-016-0915-x">https://doi.org/10.1007/s11005-016-0915-x</a>.
  ieee: T. Moser and R. Seiringer, “Triviality of a model of particles with point
    interactions in the thermodynamic limit,” <i>Letters in Mathematical Physics</i>,
    vol. 107, no. 3. Springer, pp. 533–552, 2017.
  ista: Moser T, Seiringer R. 2017. Triviality of a model of particles with point
    interactions in the thermodynamic limit. Letters in Mathematical Physics. 107(3),
    533–552.
  mla: Moser, Thomas, and Robert Seiringer. “Triviality of a Model of Particles with
    Point Interactions in the Thermodynamic Limit.” <i>Letters in Mathematical Physics</i>,
    vol. 107, no. 3, Springer, 2017, pp. 533–52, doi:<a href="https://doi.org/10.1007/s11005-016-0915-x">10.1007/s11005-016-0915-x</a>.
  short: T. Moser, R. Seiringer, Letters in Mathematical Physics 107 (2017) 533–552.
date_created: 2018-12-11T11:50:40Z
date_published: 2017-03-01T00:00:00Z
date_updated: 2023-09-20T11:18:13Z
day: '01'
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title: Triviality of a model of particles with point interactions in the thermodynamic
  limit
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)
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...
---
_id: '1478'
abstract:
- lang: eng
  text: We consider the Tonks-Girardeau gas subject to a random external potential.
    If the disorder is such that the underlying one-particle Hamiltonian displays
    localization (which is known to be generically the case), we show that there is
    exponential decay of correlations in the many-body eigenstates. Moreover, there
    is no Bose-Einstein condensation and no superfluidity, even at zero temperature.
article_number: '035002'
author:
- first_name: Robert
  full_name: Seiringer, Robert
  id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
  last_name: Seiringer
  orcid: 0000-0002-6781-0521
- first_name: Simone
  full_name: Warzel, Simone
  last_name: Warzel
citation:
  ama: Seiringer R, Warzel S. Decay of correlations and absence of superfluidity in
    the disordered Tonks-Girardeau gas. <i>New Journal of Physics</i>. 2016;18(3).
    doi:<a href="https://doi.org/10.1088/1367-2630/18/3/035002">10.1088/1367-2630/18/3/035002</a>
  apa: Seiringer, R., &#38; Warzel, S. (2016). Decay of correlations and absence of
    superfluidity in the disordered Tonks-Girardeau gas. <i>New Journal of Physics</i>.
    IOP Publishing Ltd. <a href="https://doi.org/10.1088/1367-2630/18/3/035002">https://doi.org/10.1088/1367-2630/18/3/035002</a>
  chicago: Seiringer, Robert, and Simone Warzel. “Decay of Correlations and Absence
    of Superfluidity in the Disordered Tonks-Girardeau Gas.” <i>New Journal of Physics</i>.
    IOP Publishing Ltd., 2016. <a href="https://doi.org/10.1088/1367-2630/18/3/035002">https://doi.org/10.1088/1367-2630/18/3/035002</a>.
  ieee: R. Seiringer and S. Warzel, “Decay of correlations and absence of superfluidity
    in the disordered Tonks-Girardeau gas,” <i>New Journal of Physics</i>, vol. 18,
    no. 3. IOP Publishing Ltd., 2016.
  ista: Seiringer R, Warzel S. 2016. Decay of correlations and absence of superfluidity
    in the disordered Tonks-Girardeau gas. New Journal of Physics. 18(3), 035002.
  mla: Seiringer, Robert, and Simone Warzel. “Decay of Correlations and Absence of
    Superfluidity in the Disordered Tonks-Girardeau Gas.” <i>New Journal of Physics</i>,
    vol. 18, no. 3, 035002, IOP Publishing Ltd., 2016, doi:<a href="https://doi.org/10.1088/1367-2630/18/3/035002">10.1088/1367-2630/18/3/035002</a>.
  short: R. Seiringer, S. Warzel, New Journal of Physics 18 (2016).
date_created: 2018-12-11T11:52:15Z
date_published: 2016-02-29T00:00:00Z
date_updated: 2021-01-12T06:51:01Z
day: '29'
ddc:
- '510'
- '530'
department:
- _id: RoSe
doi: 10.1088/1367-2630/18/3/035002
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has_accepted_license: '1'
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month: '02'
oa: 1
oa_version: Published Version
project:
- _id: 25C878CE-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: P27533_N27
  name: Structure of the Excitation Spectrum for Many-Body Quantum Systems
publication: New Journal of Physics
publication_status: published
publisher: IOP Publishing Ltd.
publist_id: '5716'
pubrep_id: '579'
quality_controlled: '1'
scopus_import: 1
status: public
title: Decay of correlations and absence of superfluidity in the disordered Tonks-Girardeau
  gas
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: 18
year: '2016'
...
---
_id: '1545'
abstract:
- lang: eng
  text: We provide general conditions for which bosonic quadratic Hamiltonians on
    Fock spaces can be diagonalized by Bogoliubov transformations. Our results cover
    the case when quantum systems have infinite degrees of freedom and the associated
    one-body kinetic and paring operators are unbounded. Our sufficient conditions
    are optimal in the sense that they become necessary when the relevant one-body
    operators commute.
acknowledgement: We thank Jan Dereziński for several inspiring discussions and useful
  remarks. We thank the referee for helpful comments. J.P.S. thanks the Erwin Schrödinger
  Institute for the hospitality during the thematic programme “Quantum many-body systems,
  random matrices, and disorder”. We gratefully acknowledge the financial supports
  by the European Union's Seventh Framework Programme under the ERC Advanced Grant
  ERC-2012-AdG 321029 (J.P.S.) and the REA grant agreement No. 291734 (P.T.N.), as
  well as the support of the National Science Center (NCN) grant No. 2012/07/N/ST1/03185
  and the Austrian Science Fund (FWF) project No. P 27533-N27 (M.N.).
author:
- first_name: Phan
  full_name: Nam, Phan
  id: 404092F4-F248-11E8-B48F-1D18A9856A87
  last_name: Nam
- first_name: Marcin M
  full_name: Napiórkowski, Marcin M
  id: 4197AD04-F248-11E8-B48F-1D18A9856A87
  last_name: Napiórkowski
- first_name: Jan
  full_name: Solovej, Jan
  last_name: Solovej
citation:
  ama: Nam P, Napiórkowski MM, Solovej J. Diagonalization of bosonic quadratic Hamiltonians
    by Bogoliubov transformations. <i>Journal of Functional Analysis</i>. 2016;270(11):4340-4368.
    doi:<a href="https://doi.org/10.1016/j.jfa.2015.12.007">10.1016/j.jfa.2015.12.007</a>
  apa: Nam, P., Napiórkowski, M. M., &#38; Solovej, J. (2016). Diagonalization of
    bosonic quadratic Hamiltonians by Bogoliubov transformations. <i>Journal of Functional
    Analysis</i>. Academic Press. <a href="https://doi.org/10.1016/j.jfa.2015.12.007">https://doi.org/10.1016/j.jfa.2015.12.007</a>
  chicago: Nam, Phan, Marcin M Napiórkowski, and Jan Solovej. “Diagonalization of
    Bosonic Quadratic Hamiltonians by Bogoliubov Transformations.” <i>Journal of Functional
    Analysis</i>. Academic Press, 2016. <a href="https://doi.org/10.1016/j.jfa.2015.12.007">https://doi.org/10.1016/j.jfa.2015.12.007</a>.
  ieee: P. Nam, M. M. Napiórkowski, and J. Solovej, “Diagonalization of bosonic quadratic
    Hamiltonians by Bogoliubov transformations,” <i>Journal of Functional Analysis</i>,
    vol. 270, no. 11. Academic Press, pp. 4340–4368, 2016.
  ista: Nam P, Napiórkowski MM, Solovej J. 2016. Diagonalization of bosonic quadratic
    Hamiltonians by Bogoliubov transformations. Journal of Functional Analysis. 270(11),
    4340–4368.
  mla: Nam, Phan, et al. “Diagonalization of Bosonic Quadratic Hamiltonians by Bogoliubov
    Transformations.” <i>Journal of Functional Analysis</i>, vol. 270, no. 11, Academic
    Press, 2016, pp. 4340–68, doi:<a href="https://doi.org/10.1016/j.jfa.2015.12.007">10.1016/j.jfa.2015.12.007</a>.
  short: P. Nam, M.M. Napiórkowski, J. Solovej, Journal of Functional Analysis 270
    (2016) 4340–4368.
date_created: 2018-12-11T11:52:38Z
date_published: 2016-06-01T00:00:00Z
date_updated: 2021-01-12T06:51:30Z
day: '01'
department:
- _id: RoSe
doi: 10.1016/j.jfa.2015.12.007
ec_funded: 1
intvolume: '       270'
issue: '11'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: http://arxiv.org/abs/1508.07321
month: '06'
oa: 1
oa_version: Submitted Version
page: 4340 - 4368
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '291734'
  name: International IST Postdoc Fellowship Programme
- _id: 25C878CE-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: P27533_N27
  name: Structure of the Excitation Spectrum for Many-Body Quantum Systems
publication: Journal of Functional Analysis
publication_status: published
publisher: Academic Press
publist_id: '5626'
quality_controlled: '1'
scopus_import: 1
status: public
title: Diagonalization of bosonic quadratic Hamiltonians by Bogoliubov transformations
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 270
year: '2016'
...
---
_id: '1422'
abstract:
- lang: eng
  text: We study the time-dependent Bogoliubov–de-Gennes equations for generic translation-invariant
    fermionic many-body systems. For initial states that are close to thermal equilibrium
    states at temperatures near the critical temperature, we show that the magnitude
    of the order parameter stays approximately constant in time and, in particular,
    does not follow a time-dependent Ginzburg–Landau equation, which is often employed
    as a phenomenological description and predicts a decay of the order parameter
    in time. The full non-linear structure of the equations is necessary to understand
    this behavior.
acknowledgement: 'Open access funding provided by Institute of Science and Technology
  (IST Austria). '
article_processing_charge: Yes (via OA deal)
author:
- first_name: Rupert
  full_name: Frank, Rupert
  last_name: Frank
- first_name: Christian
  full_name: Hainzl, Christian
  last_name: Hainzl
- first_name: Benjamin
  full_name: Schlein, Benjamin
  last_name: Schlein
- first_name: Robert
  full_name: Seiringer, Robert
  id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
  last_name: Seiringer
  orcid: 0000-0002-6781-0521
citation:
  ama: Frank R, Hainzl C, Schlein B, Seiringer R. Incompatibility of time-dependent
    Bogoliubov–de-Gennes and Ginzburg–Landau equations. <i>Letters in Mathematical
    Physics</i>. 2016;106(7):913-923. doi:<a href="https://doi.org/10.1007/s11005-016-0847-5">10.1007/s11005-016-0847-5</a>
  apa: Frank, R., Hainzl, C., Schlein, B., &#38; Seiringer, R. (2016). Incompatibility
    of time-dependent Bogoliubov–de-Gennes and Ginzburg–Landau equations. <i>Letters
    in Mathematical Physics</i>. Springer. <a href="https://doi.org/10.1007/s11005-016-0847-5">https://doi.org/10.1007/s11005-016-0847-5</a>
  chicago: Frank, Rupert, Christian Hainzl, Benjamin Schlein, and Robert Seiringer.
    “Incompatibility of Time-Dependent Bogoliubov–de-Gennes and Ginzburg–Landau Equations.”
    <i>Letters in Mathematical Physics</i>. Springer, 2016. <a href="https://doi.org/10.1007/s11005-016-0847-5">https://doi.org/10.1007/s11005-016-0847-5</a>.
  ieee: R. Frank, C. Hainzl, B. Schlein, and R. Seiringer, “Incompatibility of time-dependent
    Bogoliubov–de-Gennes and Ginzburg–Landau equations,” <i>Letters in Mathematical
    Physics</i>, vol. 106, no. 7. Springer, pp. 913–923, 2016.
  ista: Frank R, Hainzl C, Schlein B, Seiringer R. 2016. Incompatibility of time-dependent
    Bogoliubov–de-Gennes and Ginzburg–Landau equations. Letters in Mathematical Physics.
    106(7), 913–923.
  mla: Frank, Rupert, et al. “Incompatibility of Time-Dependent Bogoliubov–de-Gennes
    and Ginzburg–Landau Equations.” <i>Letters in Mathematical Physics</i>, vol. 106,
    no. 7, Springer, 2016, pp. 913–23, doi:<a href="https://doi.org/10.1007/s11005-016-0847-5">10.1007/s11005-016-0847-5</a>.
  short: R. Frank, C. Hainzl, B. Schlein, R. Seiringer, Letters in Mathematical Physics
    106 (2016) 913–923.
date_created: 2018-12-11T11:51:56Z
date_published: 2016-07-01T00:00:00Z
date_updated: 2021-01-12T06:50:38Z
day: '01'
ddc:
- '510'
- '530'
department:
- _id: RoSe
doi: 10.1007/s11005-016-0847-5
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- iso: eng
month: '07'
oa: 1
oa_version: Published Version
page: 913 - 923
project:
- _id: 25C878CE-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: P27533_N27
  name: Structure of the Excitation Spectrum for Many-Body Quantum Systems
- _id: B67AFEDC-15C9-11EA-A837-991A96BB2854
  name: IST Austria Open Access Fund
publication: Letters in Mathematical Physics
publication_status: published
publisher: Springer
publist_id: '5785'
pubrep_id: '591'
quality_controlled: '1'
scopus_import: 1
status: public
title: Incompatibility of time-dependent Bogoliubov–de-Gennes and Ginzburg–Landau
  equations
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: 106
year: '2016'
...
---
_id: '1428'
abstract:
- lang: eng
  text: We report on a mathematically rigorous analysis of the superfluid properties
    of a Bose- Einstein condensate in the many-body ground state of a one-dimensional
    model of interacting bosons in a random potential.
article_number: '012016'
author:
- first_name: Martin
  full_name: Könenberg, Martin
  last_name: Könenberg
- first_name: Thomas
  full_name: Moser, Thomas
  id: 2B5FC9A4-F248-11E8-B48F-1D18A9856A87
  last_name: Moser
- first_name: Robert
  full_name: Seiringer, Robert
  id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
  last_name: Seiringer
  orcid: 0000-0002-6781-0521
- first_name: Jakob
  full_name: Yngvason, Jakob
  last_name: Yngvason
citation:
  ama: 'Könenberg M, Moser T, Seiringer R, Yngvason J. Superfluidity and BEC in a
    Model of Interacting Bosons in a Random Potential. In: <i>Journal of Physics:
    Conference Series</i>. Vol 691. IOP Publishing Ltd.; 2016. doi:<a href="https://doi.org/10.1088/1742-6596/691/1/012016">10.1088/1742-6596/691/1/012016</a>'
  apa: 'Könenberg, M., Moser, T., Seiringer, R., &#38; Yngvason, J. (2016). Superfluidity
    and BEC in a Model of Interacting Bosons in a Random Potential. In <i>Journal
    of Physics: Conference Series</i> (Vol. 691). Shanghai, China: IOP Publishing
    Ltd. <a href="https://doi.org/10.1088/1742-6596/691/1/012016">https://doi.org/10.1088/1742-6596/691/1/012016</a>'
  chicago: 'Könenberg, Martin, Thomas Moser, Robert Seiringer, and Jakob Yngvason.
    “Superfluidity and BEC in a Model of Interacting Bosons in a Random Potential.”
    In <i>Journal of Physics: Conference Series</i>, Vol. 691. IOP Publishing Ltd.,
    2016. <a href="https://doi.org/10.1088/1742-6596/691/1/012016">https://doi.org/10.1088/1742-6596/691/1/012016</a>.'
  ieee: 'M. Könenberg, T. Moser, R. Seiringer, and J. Yngvason, “Superfluidity and
    BEC in a Model of Interacting Bosons in a Random Potential,” in <i>Journal of
    Physics: Conference Series</i>, Shanghai, China, 2016, vol. 691, no. 1.'
  ista: 'Könenberg M, Moser T, Seiringer R, Yngvason J. 2016. Superfluidity and BEC
    in a Model of Interacting Bosons in a Random Potential. Journal of Physics: Conference
    Series. 24th International Laser Physics Workshop (LPHYS’15) vol. 691, 012016.'
  mla: 'Könenberg, Martin, et al. “Superfluidity and BEC in a Model of Interacting
    Bosons in a Random Potential.” <i>Journal of Physics: Conference Series</i>, vol.
    691, no. 1, 012016, IOP Publishing Ltd., 2016, doi:<a href="https://doi.org/10.1088/1742-6596/691/1/012016">10.1088/1742-6596/691/1/012016</a>.'
  short: 'M. Könenberg, T. Moser, R. Seiringer, J. Yngvason, in:, Journal of Physics:
    Conference Series, IOP Publishing Ltd., 2016.'
conference:
  end_date: 2015-08-25
  location: Shanghai, China
  name: 24th International Laser Physics Workshop (LPHYS'15)
  start_date: 2015-08-21
date_created: 2018-12-11T11:51:58Z
date_published: 2016-03-07T00:00:00Z
date_updated: 2021-01-12T06:50:40Z
day: '07'
ddc:
- '510'
- '530'
department:
- _id: RoSe
doi: 10.1088/1742-6596/691/1/012016
file:
- access_level: open_access
  checksum: 109db801749072c3f6c8f1a1848700fa
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  creator: system
  date_created: 2018-12-12T10:10:55Z
  date_updated: 2020-07-14T12:44:53Z
  file_id: '4847'
  file_name: IST-2016-585-v1+1_JPCS_691_1_012016.pdf
  file_size: 1434688
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file_date_updated: 2020-07-14T12:44:53Z
has_accepted_license: '1'
intvolume: '       691'
issue: '1'
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
project:
- _id: 25C878CE-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: P27533_N27
  name: Structure of the Excitation Spectrum for Many-Body Quantum Systems
publication: 'Journal of Physics: Conference Series'
publication_status: published
publisher: IOP Publishing Ltd.
publist_id: '5770'
pubrep_id: '585'
quality_controlled: '1'
scopus_import: 1
status: public
title: Superfluidity and BEC in a Model of Interacting Bosons in a Random Potential
tmp:
  image: /images/cc_by.png
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  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: conference
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 691
year: '2016'
...
