---
_id: '1807'
abstract:
- lang: eng
  text: We study a double Cahn-Hilliard type functional related to the Gross-Pitaevskii
    energy of two-components Bose-Einstein condensates. In the case of large but same
    order intercomponent and intracomponent coupling strengths, we prove Γ-convergence
    to a perimeter minimisation functional with an inhomogeneous surface tension.
    We study the asymptotic behavior of the surface tension as the ratio between the
    intercomponent and intracomponent coupling strengths becomes very small or very
    large and obtain good agreement with the physical literature. We obtain as a consequence,
    symmetry breaking of the minimisers for the harmonic potential.
article_processing_charge: No
arxiv: 1
author:
- first_name: Michael
  full_name: Goldman, Michael
  last_name: Goldman
- first_name: Jimena
  full_name: Royo-Letelier, Jimena
  id: 4D3BED28-F248-11E8-B48F-1D18A9856A87
  last_name: Royo-Letelier
citation:
  ama: Goldman M, Royo-Letelier J. Sharp interface limit for two components Bose-Einstein
    condensates. <i>ESAIM - Control, Optimisation and Calculus of Variations</i>.
    2015;21(3):603-624. doi:<a href="https://doi.org/10.1051/cocv/2014040">10.1051/cocv/2014040</a>
  apa: Goldman, M., &#38; Royo-Letelier, J. (2015). Sharp interface limit for two
    components Bose-Einstein condensates. <i>ESAIM - Control, Optimisation and Calculus
    of Variations</i>. EDP Sciences. <a href="https://doi.org/10.1051/cocv/2014040">https://doi.org/10.1051/cocv/2014040</a>
  chicago: Goldman, Michael, and Jimena Royo-Letelier. “Sharp Interface Limit for
    Two Components Bose-Einstein Condensates.” <i>ESAIM - Control, Optimisation and
    Calculus of Variations</i>. EDP Sciences, 2015. <a href="https://doi.org/10.1051/cocv/2014040">https://doi.org/10.1051/cocv/2014040</a>.
  ieee: M. Goldman and J. Royo-Letelier, “Sharp interface limit for two components
    Bose-Einstein condensates,” <i>ESAIM - Control, Optimisation and Calculus of Variations</i>,
    vol. 21, no. 3. EDP Sciences, pp. 603–624, 2015.
  ista: Goldman M, Royo-Letelier J. 2015. Sharp interface limit for two components
    Bose-Einstein condensates. ESAIM - Control, Optimisation and Calculus of Variations.
    21(3), 603–624.
  mla: Goldman, Michael, and Jimena Royo-Letelier. “Sharp Interface Limit for Two
    Components Bose-Einstein Condensates.” <i>ESAIM - Control, Optimisation and Calculus
    of Variations</i>, vol. 21, no. 3, EDP Sciences, 2015, pp. 603–24, doi:<a href="https://doi.org/10.1051/cocv/2014040">10.1051/cocv/2014040</a>.
  short: M. Goldman, J. Royo-Letelier, ESAIM - Control, Optimisation and Calculus
    of Variations 21 (2015) 603–624.
corr_author: '1'
date_created: 2018-12-11T11:54:07Z
date_published: 2015-05-01T00:00:00Z
date_updated: 2025-09-23T10:45:09Z
day: '01'
department:
- _id: RoSe
doi: 10.1051/cocv/2014040
external_id:
  arxiv:
  - '1401.1727'
  isi:
  - '000356012000001'
intvolume: '        21'
isi: 1
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: http://arxiv.org/abs/1401.1727
month: '05'
oa: 1
oa_version: Preprint
page: 603 - 624
publication: ESAIM - Control, Optimisation and Calculus of Variations
publication_status: published
publisher: EDP Sciences
publist_id: '5303'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Sharp interface limit for two components Bose-Einstein condensates
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 21
year: '2015'
...
---
_id: '1880'
abstract:
- lang: eng
  text: We investigate the relation between Bose-Einstein condensation (BEC) and superfluidity
    in the ground state of a one-dimensional model of interacting bosons in a strong
    random potential. We prove rigorously that in a certain parameter regime the superfluid
    fraction can be arbitrarily small while complete BEC prevails. In another regime
    there is both complete BEC and complete superfluidity, despite the strong disorder
acknowledgement: Support from the Natural Sciences and Engineering Research Council
  of Canada NSERC (MK and RS) and from the Austrian Science Fund FWF (JY, under project
  P 22929-N16) is gratefully acknowledged
article_number: '013022'
article_processing_charge: No
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. Superfluid behavior of a Bose-Einstein
    condensate in a random potential. <i>New Journal of Physics</i>. 2015;17. doi:<a
    href="https://doi.org/10.1088/1367-2630/17/1/013022">10.1088/1367-2630/17/1/013022</a>
  apa: Könenberg, M., Moser, T., Seiringer, R., &#38; Yngvason, J. (2015). Superfluid
    behavior of a Bose-Einstein condensate in a random potential. <i>New Journal of
    Physics</i>. IOP Publishing. <a href="https://doi.org/10.1088/1367-2630/17/1/013022">https://doi.org/10.1088/1367-2630/17/1/013022</a>
  chicago: Könenberg, Martin, Thomas Moser, Robert Seiringer, and Jakob Yngvason.
    “Superfluid Behavior of a Bose-Einstein Condensate in a Random Potential.” <i>New
    Journal of Physics</i>. IOP Publishing, 2015. <a href="https://doi.org/10.1088/1367-2630/17/1/013022">https://doi.org/10.1088/1367-2630/17/1/013022</a>.
  ieee: M. Könenberg, T. Moser, R. Seiringer, and J. Yngvason, “Superfluid behavior
    of a Bose-Einstein condensate in a random potential,” <i>New Journal of Physics</i>,
    vol. 17. IOP Publishing, 2015.
  ista: Könenberg M, Moser T, Seiringer R, Yngvason J. 2015. Superfluid behavior of
    a Bose-Einstein condensate in a random potential. New Journal of Physics. 17,
    013022.
  mla: Könenberg, Martin, et al. “Superfluid Behavior of a Bose-Einstein Condensate
    in a Random Potential.” <i>New Journal of Physics</i>, vol. 17, 013022, IOP Publishing,
    2015, doi:<a href="https://doi.org/10.1088/1367-2630/17/1/013022">10.1088/1367-2630/17/1/013022</a>.
  short: M. Könenberg, T. Moser, R. Seiringer, J. Yngvason, New Journal of Physics
    17 (2015).
date_created: 2018-12-11T11:54:30Z
date_published: 2015-01-15T00:00:00Z
date_updated: 2025-09-23T10:51:00Z
day: '15'
ddc:
- '530'
department:
- _id: RoSe
doi: 10.1088/1367-2630/17/1/013022
external_id:
  isi:
  - '000348759300007'
file:
- access_level: open_access
  checksum: 38fdf2b5ac30445e26a5d613abd84b16
  content_type: application/pdf
  creator: system
  date_created: 2018-12-12T10:12:44Z
  date_updated: 2020-07-14T12:45:20Z
  file_id: '4963'
  file_name: IST-2016-447-v1+1_document_1_.pdf
  file_size: 768108
  relation: main_file
file_date_updated: 2020-07-14T12:45:20Z
has_accepted_license: '1'
intvolume: '        17'
isi: 1
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
project:
- _id: 26450934-B435-11E9-9278-68D0E5697425
  name: NSERC Postdoctoral fellowship
publication: New Journal of Physics
publication_status: published
publisher: IOP Publishing
publist_id: '5214'
pubrep_id: '447'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Superfluid behavior of a Bose-Einstein condensate in a random potential
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 17
year: '2015'
...
---
_id: '2085'
abstract:
- lang: eng
  text: 'We study the spectrum of a large system of N identical bosons interacting
    via a two-body potential with strength 1/N. In this mean-field regime, Bogoliubov''s
    theory predicts that the spectrum of the N-particle Hamiltonian can be approximated
    by that of an effective quadratic Hamiltonian acting on Fock space, which describes
    the fluctuations around a condensed state. Recently, Bogoliubov''s theory has
    been justified rigorously in the case that the low-energy eigenvectors of the
    N-particle Hamiltonian display complete condensation in the unique minimizer of
    the corresponding Hartree functional. In this paper, we shall justify Bogoliubov''s
    theory for the high-energy part of the spectrum of the N-particle Hamiltonian
    corresponding to (non-linear) excited states of the Hartree functional. Moreover,
    we shall extend the existing results on the excitation spectrum to the case of
    non-uniqueness and/or degeneracy of the Hartree minimizer. In particular, the
    latter covers the case of rotating Bose gases, when the rotation speed is large
    enough to break the symmetry and to produce multiple quantized vortices in the
    Hartree minimizer. '
article_processing_charge: No
arxiv: 1
author:
- first_name: Phan
  full_name: Nam, Phan
  id: 404092F4-F248-11E8-B48F-1D18A9856A87
  last_name: Nam
- first_name: Robert
  full_name: Seiringer, Robert
  id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
  last_name: Seiringer
  orcid: 0000-0002-6781-0521
citation:
  ama: Nam P, Seiringer R. Collective excitations of Bose gases in the mean-field
    regime. <i>Archive for Rational Mechanics and Analysis</i>. 2015;215(2):381-417.
    doi:<a href="https://doi.org/10.1007/s00205-014-0781-6">10.1007/s00205-014-0781-6</a>
  apa: Nam, P., &#38; Seiringer, R. (2015). Collective excitations of Bose gases in
    the mean-field regime. <i>Archive for Rational Mechanics and Analysis</i>. Springer.
    <a href="https://doi.org/10.1007/s00205-014-0781-6">https://doi.org/10.1007/s00205-014-0781-6</a>
  chicago: Nam, Phan, and Robert Seiringer. “Collective Excitations of Bose Gases
    in the Mean-Field Regime.” <i>Archive for Rational Mechanics and Analysis</i>.
    Springer, 2015. <a href="https://doi.org/10.1007/s00205-014-0781-6">https://doi.org/10.1007/s00205-014-0781-6</a>.
  ieee: P. Nam and R. Seiringer, “Collective excitations of Bose gases in the mean-field
    regime,” <i>Archive for Rational Mechanics and Analysis</i>, vol. 215, no. 2.
    Springer, pp. 381–417, 2015.
  ista: Nam P, Seiringer R. 2015. Collective excitations of Bose gases in the mean-field
    regime. Archive for Rational Mechanics and Analysis. 215(2), 381–417.
  mla: Nam, Phan, and Robert Seiringer. “Collective Excitations of Bose Gases in the
    Mean-Field Regime.” <i>Archive for Rational Mechanics and Analysis</i>, vol. 215,
    no. 2, Springer, 2015, pp. 381–417, doi:<a href="https://doi.org/10.1007/s00205-014-0781-6">10.1007/s00205-014-0781-6</a>.
  short: P. Nam, R. Seiringer, Archive for Rational Mechanics and Analysis 215 (2015)
    381–417.
corr_author: '1'
date_created: 2018-12-11T11:55:37Z
date_published: 2015-02-01T00:00:00Z
date_updated: 2025-09-23T08:17:14Z
day: '01'
department:
- _id: RoSe
doi: 10.1007/s00205-014-0781-6
external_id:
  arxiv:
  - '1402.1153'
  isi:
  - '000347150400002'
intvolume: '       215'
isi: 1
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: http://arxiv.org/abs/1402.1153
month: '02'
oa: 1
oa_version: Preprint
page: 381 - 417
publication: Archive for Rational Mechanics and Analysis
publication_status: published
publisher: Springer
publist_id: '4951'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Collective excitations of Bose gases in the mean-field regime
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 215
year: '2015'
...
---
_id: '1572'
abstract:
- lang: eng
  text: "We consider the quantum ferromagnetic Heisenberg model in three dimensions,
    for all spins S ≥ 1/2. We rigorously prove the validity of the spin-wave approximation
    for the excitation spectrum, at the level of the first non-trivial contribution
    to the free energy at low temperatures. Our proof comes with explicit, constructive
    upper and lower bounds on the error term. It uses in an essential way the bosonic
    formulation of the model in terms of the Holstein-Primakoff representation. In
    this language, the model describes interacting bosons with a hard-core on-site
    repulsion and a nearest-neighbor attraction. This attractive interaction makes
    the lower bound on the free energy particularly tricky: the key idea there is
    to prove a differential inequality for the two-particle density, which is thereby
    shown to be smaller than the probability density of a suitably weighted two-particle
    random process on the lattice.\r\n"
article_processing_charge: No
arxiv: 1
author:
- first_name: Michele
  full_name: Correggi, Michele
  last_name: Correggi
- first_name: Alessandro
  full_name: Giuliani, Alessandro
  last_name: Giuliani
- first_name: Robert
  full_name: Seiringer, Robert
  id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
  last_name: Seiringer
  orcid: 0000-0002-6781-0521
citation:
  ama: Correggi M, Giuliani A, Seiringer R. Validity of the spin-wave approximation
    for the free energy of the Heisenberg ferromagnet. <i>Communications in Mathematical
    Physics</i>. 2015;339(1):279-307. doi:<a href="https://doi.org/10.1007/s00220-015-2402-0">10.1007/s00220-015-2402-0</a>
  apa: Correggi, M., Giuliani, A., &#38; Seiringer, R. (2015). Validity of the spin-wave
    approximation for the free energy of the Heisenberg ferromagnet. <i>Communications
    in Mathematical Physics</i>. Springer. <a href="https://doi.org/10.1007/s00220-015-2402-0">https://doi.org/10.1007/s00220-015-2402-0</a>
  chicago: Correggi, Michele, Alessandro Giuliani, and Robert Seiringer. “Validity
    of the Spin-Wave Approximation for the Free Energy of the Heisenberg Ferromagnet.”
    <i>Communications in Mathematical Physics</i>. Springer, 2015. <a href="https://doi.org/10.1007/s00220-015-2402-0">https://doi.org/10.1007/s00220-015-2402-0</a>.
  ieee: M. Correggi, A. Giuliani, and R. Seiringer, “Validity of the spin-wave approximation
    for the free energy of the Heisenberg ferromagnet,” <i>Communications in Mathematical
    Physics</i>, vol. 339, no. 1. Springer, pp. 279–307, 2015.
  ista: Correggi M, Giuliani A, Seiringer R. 2015. Validity of the spin-wave approximation
    for the free energy of the Heisenberg ferromagnet. Communications in Mathematical
    Physics. 339(1), 279–307.
  mla: Correggi, Michele, et al. “Validity of the Spin-Wave Approximation for the
    Free Energy of the Heisenberg Ferromagnet.” <i>Communications in Mathematical
    Physics</i>, vol. 339, no. 1, Springer, 2015, pp. 279–307, doi:<a href="https://doi.org/10.1007/s00220-015-2402-0">10.1007/s00220-015-2402-0</a>.
  short: M. Correggi, A. Giuliani, R. Seiringer, Communications in Mathematical Physics
    339 (2015) 279–307.
date_created: 2018-12-11T11:52:47Z
date_published: 2015-06-23T00:00:00Z
date_updated: 2025-09-29T11:04:37Z
day: '23'
department:
- _id: RoSe
doi: 10.1007/s00220-015-2402-0
external_id:
  arxiv:
  - '1312.7873'
  isi:
  - '000357582800010'
intvolume: '       339'
isi: 1
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: http://arxiv.org/abs/1312.7873
month: '06'
oa: 1
oa_version: Preprint
page: 279 - 307
publication: Communications in Mathematical Physics
publication_status: published
publisher: Springer
publist_id: '5599'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Validity of the spin-wave approximation for the free energy of the Heisenberg
  ferromagnet
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 339
year: '2015'
...
---
_id: '1573'
abstract:
- lang: eng
  text: We present a new, simpler proof of the unconditional uniqueness of solutions
    to the cubic Gross-Pitaevskii hierarchy in ℝ3. One of the main tools in our analysis
    is the quantum de Finetti theorem. Our uniqueness result is equivalent to the
    one established in the celebrated works of Erdos, Schlein, and Yau.
article_processing_charge: No
arxiv: 1
author:
- first_name: Thomas
  full_name: Chen, Thomas
  last_name: Chen
- first_name: Christian
  full_name: Hainzl, Christian
  last_name: Hainzl
- first_name: Nataša
  full_name: Pavlović, Nataša
  last_name: Pavlović
- first_name: Robert
  full_name: Seiringer, Robert
  id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
  last_name: Seiringer
  orcid: 0000-0002-6781-0521
citation:
  ama: Chen T, Hainzl C, Pavlović N, Seiringer R. Unconditional uniqueness for the
    cubic gross pitaevskii hierarchy via quantum de finetti. <i>Communications on
    Pure and Applied Mathematics</i>. 2015;68(10):1845-1884. doi:<a href="https://doi.org/10.1002/cpa.21552">10.1002/cpa.21552</a>
  apa: Chen, T., Hainzl, C., Pavlović, N., &#38; Seiringer, R. (2015). Unconditional
    uniqueness for the cubic gross pitaevskii hierarchy via quantum de finetti. <i>Communications
    on Pure and Applied Mathematics</i>. Wiley. <a href="https://doi.org/10.1002/cpa.21552">https://doi.org/10.1002/cpa.21552</a>
  chicago: Chen, Thomas, Christian Hainzl, Nataša Pavlović, and Robert Seiringer.
    “Unconditional Uniqueness for the Cubic Gross Pitaevskii Hierarchy via Quantum
    de Finetti.” <i>Communications on Pure and Applied Mathematics</i>. Wiley, 2015.
    <a href="https://doi.org/10.1002/cpa.21552">https://doi.org/10.1002/cpa.21552</a>.
  ieee: T. Chen, C. Hainzl, N. Pavlović, and R. Seiringer, “Unconditional uniqueness
    for the cubic gross pitaevskii hierarchy via quantum de finetti,” <i>Communications
    on Pure and Applied Mathematics</i>, vol. 68, no. 10. Wiley, pp. 1845–1884, 2015.
  ista: Chen T, Hainzl C, Pavlović N, Seiringer R. 2015. Unconditional uniqueness
    for the cubic gross pitaevskii hierarchy via quantum de finetti. Communications
    on Pure and Applied Mathematics. 68(10), 1845–1884.
  mla: Chen, Thomas, et al. “Unconditional Uniqueness for the Cubic Gross Pitaevskii
    Hierarchy via Quantum de Finetti.” <i>Communications on Pure and Applied Mathematics</i>,
    vol. 68, no. 10, Wiley, 2015, pp. 1845–84, doi:<a href="https://doi.org/10.1002/cpa.21552">10.1002/cpa.21552</a>.
  short: T. Chen, C. Hainzl, N. Pavlović, R. Seiringer, Communications on Pure and
    Applied Mathematics 68 (2015) 1845–1884.
date_created: 2018-12-11T11:52:48Z
date_published: 2015-10-01T00:00:00Z
date_updated: 2025-09-29T10:59:59Z
day: '01'
department:
- _id: RoSe
doi: 10.1002/cpa.21552
external_id:
  arxiv:
  - '1307.3168'
  isi:
  - '000359670800004'
intvolume: '        68'
isi: 1
issue: '10'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: http://arxiv.org/abs/1307.3168
month: '10'
oa: 1
oa_version: Preprint
page: 1845 - 1884
project:
- _id: 26450934-B435-11E9-9278-68D0E5697425
  name: NSERC Postdoctoral fellowship
publication: Communications on Pure and Applied Mathematics
publication_status: published
publisher: Wiley
publist_id: '5598'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Unconditional uniqueness for the cubic gross pitaevskii hierarchy via quantum
  de finetti
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 68
year: '2015'
...
---
_id: '1704'
abstract:
- lang: eng
  text: Given a convex function (Formula presented.) and two hermitian matrices A
    and B, Lewin and Sabin study in (Lett Math Phys 104:691–705, 2014) the relative
    entropy defined by (Formula presented.). Among other things, they prove that the
    so-defined quantity is monotone if and only if (Formula presented.) is operator
    monotone. The monotonicity is then used to properly define (Formula presented.)
    for bounded self-adjoint operators acting on an infinite-dimensional Hilbert space
    by a limiting procedure. More precisely, for an increasing sequence of finite-dimensional
    projections (Formula presented.) with (Formula presented.) strongly, the limit
    (Formula presented.) is shown to exist and to be independent of the sequence of
    projections (Formula presented.). The question whether this sequence converges
    to its &quot;obvious&quot; limit, namely (Formula presented.), has been left open.
    We answer this question in principle affirmatively and show that (Formula presented.).
    If the operators A and B are regular enough, that is (A − B), (Formula presented.)
    and (Formula presented.) are trace-class, the identity (Formula presented.) holds.
article_processing_charge: No
arxiv: 1
author:
- first_name: Andreas
  full_name: Deuchert, Andreas
  last_name: Deuchert
  orcid: 0000-0003-3146-6746
- first_name: Christian
  full_name: Hainzl, Christian
  last_name: Hainzl
- first_name: Robert
  full_name: Seiringer, Robert
  id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
  last_name: Seiringer
  orcid: 0000-0002-6781-0521
citation:
  ama: Deuchert A, Hainzl C, Seiringer R. Note on a family of monotone quantum relative
    entropies. <i>Letters in Mathematical Physics</i>. 2015;105(10):1449-1466. doi:<a
    href="https://doi.org/10.1007/s11005-015-0787-5">10.1007/s11005-015-0787-5</a>
  apa: Deuchert, A., Hainzl, C., &#38; Seiringer, R. (2015). Note on a family of monotone
    quantum relative entropies. <i>Letters in Mathematical Physics</i>. Springer.
    <a href="https://doi.org/10.1007/s11005-015-0787-5">https://doi.org/10.1007/s11005-015-0787-5</a>
  chicago: Deuchert, Andreas, Christian Hainzl, and Robert Seiringer. “Note on a Family
    of Monotone Quantum Relative Entropies.” <i>Letters in Mathematical Physics</i>.
    Springer, 2015. <a href="https://doi.org/10.1007/s11005-015-0787-5">https://doi.org/10.1007/s11005-015-0787-5</a>.
  ieee: A. Deuchert, C. Hainzl, and R. Seiringer, “Note on a family of monotone quantum
    relative entropies,” <i>Letters in Mathematical Physics</i>, vol. 105, no. 10.
    Springer, pp. 1449–1466, 2015.
  ista: Deuchert A, Hainzl C, Seiringer R. 2015. Note on a family of monotone quantum
    relative entropies. Letters in Mathematical Physics. 105(10), 1449–1466.
  mla: Deuchert, Andreas, et al. “Note on a Family of Monotone Quantum Relative Entropies.”
    <i>Letters in Mathematical Physics</i>, vol. 105, no. 10, Springer, 2015, pp.
    1449–66, doi:<a href="https://doi.org/10.1007/s11005-015-0787-5">10.1007/s11005-015-0787-5</a>.
  short: A. Deuchert, C. Hainzl, R. Seiringer, Letters in Mathematical Physics 105
    (2015) 1449–1466.
corr_author: '1'
date_created: 2018-12-11T11:53:34Z
date_published: 2015-08-05T00:00:00Z
date_updated: 2025-09-23T09:41:03Z
day: '05'
ddc:
- '510'
department:
- _id: RoSe
doi: 10.1007/s11005-015-0787-5
external_id:
  arxiv:
  - '1502.07205'
  isi:
  - '000361007600006'
file:
- access_level: open_access
  checksum: fd7307282a314cc1fbbaef77b187516b
  content_type: application/pdf
  creator: dernst
  date_created: 2019-01-15T14:42:07Z
  date_updated: 2020-07-14T12:45:13Z
  file_id: '5836'
  file_name: 2015_LettersMathPhys_Deuchert.pdf
  file_size: 484967
  relation: main_file
file_date_updated: 2020-07-14T12:45:13Z
has_accepted_license: '1'
intvolume: '       105'
isi: 1
issue: '10'
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nc/4.0/
month: '08'
oa: 1
oa_version: Preprint
page: 1449 - 1466
publication: Letters in Mathematical Physics
publication_status: published
publisher: Springer
publist_id: '5432'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Note on a family of monotone quantum relative entropies
tmp:
  image: /images/cc_by_nc.png
  legal_code_url: https://creativecommons.org/licenses/by-nc/4.0/legalcode
  name: Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
  short: CC BY-NC (4.0)
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 105
year: '2015'
...
---
_id: '473'
abstract:
- lang: eng
  text: We prove that nonlinear Gibbs measures can be obtained from the corresponding
    many-body, grand-canonical, quantum Gibbs states, in a mean-field limit where
    the temperature T diverges and the interaction strength behaves as 1/T. We proceed
    by characterizing the interacting Gibbs state as minimizing a functional counting
    the free-energy relatively to the non-interacting case. We then perform an infinite-dimensional
    analogue of phase-space semiclassical analysis, using fine properties of the quantum
    relative entropy, the link between quantum de Finetti measures and upper/lower
    symbols in a coherent state basis, as well as Berezin-Lieb type inequalities.
    Our results cover the measure built on the defocusing nonlinear Schrödinger functional
    on a finite interval, as well as smoother interactions in dimensions d 2.
author:
- first_name: Mathieu
  full_name: Lewin, Mathieu
  last_name: Lewin
- first_name: Nam
  full_name: Phan Thanh, Nam
  id: 404092F4-F248-11E8-B48F-1D18A9856A87
  last_name: Phan Thanh
- first_name: Nicolas
  full_name: Rougerie, Nicolas
  last_name: Rougerie
citation:
  ama: Lewin M, Nam P, Rougerie N. Derivation of nonlinear gibbs measures from many-body
    quantum mechanics. <i>Journal de l’Ecole Polytechnique - Mathematiques</i>. 2015;2:65-115.
    doi:<a href="https://doi.org/10.5802/jep.18">10.5802/jep.18</a>
  apa: Lewin, M., Nam, P., &#38; Rougerie, N. (2015). Derivation of nonlinear gibbs
    measures from many-body quantum mechanics. <i>Journal de l’Ecole Polytechnique
    - Mathematiques</i>. Ecole Polytechnique. <a href="https://doi.org/10.5802/jep.18">https://doi.org/10.5802/jep.18</a>
  chicago: Lewin, Mathieu, Phan Nam, and Nicolas Rougerie. “Derivation of Nonlinear
    Gibbs Measures from Many-Body Quantum Mechanics.” <i>Journal de l’Ecole Polytechnique
    - Mathematiques</i>. Ecole Polytechnique, 2015. <a href="https://doi.org/10.5802/jep.18">https://doi.org/10.5802/jep.18</a>.
  ieee: M. Lewin, P. Nam, and N. Rougerie, “Derivation of nonlinear gibbs measures
    from many-body quantum mechanics,” <i>Journal de l’Ecole Polytechnique - Mathematiques</i>,
    vol. 2. Ecole Polytechnique, pp. 65–115, 2015.
  ista: Lewin M, Nam P, Rougerie N. 2015. Derivation of nonlinear gibbs measures from
    many-body quantum mechanics. Journal de l’Ecole Polytechnique - Mathematiques.
    2, 65–115.
  mla: Lewin, Mathieu, et al. “Derivation of Nonlinear Gibbs Measures from Many-Body
    Quantum Mechanics.” <i>Journal de l’Ecole Polytechnique - Mathematiques</i>, vol.
    2, Ecole Polytechnique, 2015, pp. 65–115, doi:<a href="https://doi.org/10.5802/jep.18">10.5802/jep.18</a>.
  short: M. Lewin, P. Nam, N. Rougerie, Journal de l’Ecole Polytechnique - Mathematiques
    2 (2015) 65–115.
date_created: 2018-12-11T11:46:40Z
date_published: 2015-01-01T00:00:00Z
date_updated: 2021-01-12T08:00:52Z
day: '01'
ddc:
- '539'
department:
- _id: RoSe
doi: 10.5802/jep.18
ec_funded: 1
file:
- access_level: open_access
  checksum: a40eb4016717ddc9927154798a4c164a
  content_type: application/pdf
  creator: system
  date_created: 2018-12-12T10:12:53Z
  date_updated: 2020-07-14T12:46:35Z
  file_id: '4974'
  file_name: IST-2018-951-v1+1_2015_Thanh-Nam_Derivation_of.pdf
  file_size: 1084254
  relation: main_file
file_date_updated: 2020-07-14T12:46:35Z
has_accepted_license: '1'
intvolume: '         2'
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nd/4.0/
month: '01'
oa: 1
oa_version: Published Version
page: 65 - 115
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '291734'
  name: International IST Postdoc Fellowship Programme
publication: Journal de l'Ecole Polytechnique - Mathematiques
publication_status: published
publisher: Ecole Polytechnique
publist_id: '7344'
pubrep_id: '951'
quality_controlled: '1'
scopus_import: 1
status: public
title: Derivation of nonlinear gibbs measures from many-body quantum mechanics
tmp:
  image: /image/cc_by_nd.png
  legal_code_url: https://creativecommons.org/licenses/by-nd/4.0/legalcode
  name: Creative Commons Attribution-NoDerivatives 4.0 International (CC BY-ND 4.0)
  short: CC BY-ND (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 2
year: '2015'
...
---
_id: '1821'
abstract:
- lang: eng
  text: We review recent progress towards a rigorous understanding of the Bogoliubov
    approximation for bosonic quantum many-body systems. We focus, in particular,
    on the excitation spectrum of a Bose gas in the mean-field (Hartree) limit. A
    list of open problems will be discussed at the end.
article_number: '1.4881536'
article_processing_charge: No
author:
- first_name: Robert
  full_name: Seiringer, Robert
  id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
  last_name: Seiringer
  orcid: 0000-0002-6781-0521
citation:
  ama: Seiringer R. Bose gases, Bose-Einstein condensation, and the Bogoliubov approximation.
    <i>Journal of Mathematical Physics</i>. 2014;55(7). doi:<a href="https://doi.org/10.1063/1.4881536">10.1063/1.4881536</a>
  apa: Seiringer, R. (2014). Bose gases, Bose-Einstein condensation, and the Bogoliubov
    approximation. <i>Journal of Mathematical Physics</i>. American Institute of Physics.
    <a href="https://doi.org/10.1063/1.4881536">https://doi.org/10.1063/1.4881536</a>
  chicago: Seiringer, Robert. “Bose Gases, Bose-Einstein Condensation, and the Bogoliubov
    Approximation.” <i>Journal of Mathematical Physics</i>. American Institute of
    Physics, 2014. <a href="https://doi.org/10.1063/1.4881536">https://doi.org/10.1063/1.4881536</a>.
  ieee: R. Seiringer, “Bose gases, Bose-Einstein condensation, and the Bogoliubov
    approximation,” <i>Journal of Mathematical Physics</i>, vol. 55, no. 7. American
    Institute of Physics, 2014.
  ista: Seiringer R. 2014. Bose gases, Bose-Einstein condensation, and the Bogoliubov
    approximation. Journal of Mathematical Physics. 55(7), 1.4881536.
  mla: Seiringer, Robert. “Bose Gases, Bose-Einstein Condensation, and the Bogoliubov
    Approximation.” <i>Journal of Mathematical Physics</i>, vol. 55, no. 7, 1.4881536,
    American Institute of Physics, 2014, doi:<a href="https://doi.org/10.1063/1.4881536">10.1063/1.4881536</a>.
  short: R. Seiringer, Journal of Mathematical Physics 55 (2014).
corr_author: '1'
date_created: 2018-12-11T11:54:11Z
date_published: 2014-06-26T00:00:00Z
date_updated: 2025-09-29T13:13:35Z
day: '26'
ddc:
- '510'
- '530'
department:
- _id: RoSe
doi: 10.1063/1.4881536
external_id:
  isi:
  - '000341174600010'
file:
- access_level: open_access
  checksum: ed0efc93c10f1341155f0316af617b82
  content_type: application/pdf
  creator: system
  date_created: 2018-12-12T10:15:49Z
  date_updated: 2020-07-14T12:45:17Z
  file_id: '5172'
  file_name: IST-2016-532-v1+1_J._Mathematical_Phys._2014_Seiringer.pdf
  file_size: 269171
  relation: main_file
file_date_updated: 2020-07-14T12:45:17Z
has_accepted_license: '1'
intvolume: '        55'
isi: 1
issue: '7'
language:
- iso: eng
month: '06'
oa: 1
oa_version: Submitted Version
project:
- _id: 26450934-B435-11E9-9278-68D0E5697425
  name: NSERC Postdoctoral fellowship
publication: Journal of Mathematical Physics
publication_status: published
publisher: American Institute of Physics
publist_id: '5285'
pubrep_id: '532'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Bose gases, Bose-Einstein condensation, and the Bogoliubov approximation
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 55
year: '2014'
...
---
_id: '1822'
article_number: '075101'
article_processing_charge: No
author:
- first_name: Vojkan
  full_name: Jakšić, Vojkan
  last_name: Jakšić
- first_name: Claude
  full_name: Pillet, Claude
  last_name: Pillet
- first_name: Robert
  full_name: Seiringer, Robert
  id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
  last_name: Seiringer
  orcid: 0000-0002-6781-0521
citation:
  ama: Jakšić V, Pillet C, Seiringer R. Introduction. <i>Journal of Mathematical Physics</i>.
    2014;55(7). doi:<a href="https://doi.org/10.1063/1.4884877">10.1063/1.4884877</a>
  apa: Jakšić, V., Pillet, C., &#38; Seiringer, R. (2014). Introduction. <i>Journal
    of Mathematical Physics</i>. American Institute of Physics. <a href="https://doi.org/10.1063/1.4884877">https://doi.org/10.1063/1.4884877</a>
  chicago: Jakšić, Vojkan, Claude Pillet, and Robert Seiringer. “Introduction.” <i>Journal
    of Mathematical Physics</i>. American Institute of Physics, 2014. <a href="https://doi.org/10.1063/1.4884877">https://doi.org/10.1063/1.4884877</a>.
  ieee: V. Jakšić, C. Pillet, and R. Seiringer, “Introduction,” <i>Journal of Mathematical
    Physics</i>, vol. 55, no. 7. American Institute of Physics, 2014.
  ista: Jakšić V, Pillet C, Seiringer R. 2014. Introduction. Journal of Mathematical
    Physics. 55(7), 075101.
  mla: Jakšić, Vojkan, et al. “Introduction.” <i>Journal of Mathematical Physics</i>,
    vol. 55, no. 7, 075101, American Institute of Physics, 2014, doi:<a href="https://doi.org/10.1063/1.4884877">10.1063/1.4884877</a>.
  short: V. Jakšić, C. Pillet, R. Seiringer, Journal of Mathematical Physics 55 (2014).
date_created: 2018-12-11T11:54:12Z
date_published: 2014-07-01T00:00:00Z
date_updated: 2025-09-29T13:12:51Z
day: '01'
department:
- _id: RoSe
doi: 10.1063/1.4884877
external_id:
  isi:
  - '000341174600001'
intvolume: '        55'
isi: 1
issue: '7'
language:
- iso: eng
month: '07'
oa_version: None
publication: Journal of Mathematical Physics
publication_status: published
publisher: American Institute of Physics
publist_id: '5284'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Introduction
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 55
year: '2014'
...
---
_id: '2029'
abstract:
- lang: eng
  text: Spin-wave theory is a key ingredient in our comprehension of quantum spin
    systems, and is used successfully for understanding a wide range of magnetic phenomena,
    including magnon condensation and stability of patterns in dipolar systems. Nevertheless,
    several decades of research failed to establish the validity of spin-wave theory
    rigorously, even for the simplest models of quantum spins. A rigorous justification
    of the method for the three-dimensional quantum Heisenberg ferromagnet at low
    temperatures is presented here. We derive sharp bounds on its free energy by combining
    a bosonic formulation of the model introduced by Holstein and Primakoff with probabilistic
    estimates and operator inequalities.
acknowledgement: 239694; ERC; European Research Council
article_number: '20003'
article_processing_charge: No
arxiv: 1
author:
- first_name: Michele
  full_name: Correggi, Michele
  last_name: Correggi
- first_name: Alessandro
  full_name: Giuliani, Alessandro
  last_name: Giuliani
- first_name: Robert
  full_name: Seiringer, Robert
  id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
  last_name: Seiringer
  orcid: 0000-0002-6781-0521
citation:
  ama: Correggi M, Giuliani A, Seiringer R. Validity of spin-wave theory for the quantum
    Heisenberg model. <i>EPL</i>. 2014;108(2). doi:<a href="https://doi.org/10.1209/0295-5075/108/20003">10.1209/0295-5075/108/20003</a>
  apa: Correggi, M., Giuliani, A., &#38; Seiringer, R. (2014). Validity of spin-wave
    theory for the quantum Heisenberg model. <i>EPL</i>. IOP Publishing. <a href="https://doi.org/10.1209/0295-5075/108/20003">https://doi.org/10.1209/0295-5075/108/20003</a>
  chicago: Correggi, Michele, Alessandro Giuliani, and Robert Seiringer. “Validity
    of Spin-Wave Theory for the Quantum Heisenberg Model.” <i>EPL</i>. IOP Publishing,
    2014. <a href="https://doi.org/10.1209/0295-5075/108/20003">https://doi.org/10.1209/0295-5075/108/20003</a>.
  ieee: M. Correggi, A. Giuliani, and R. Seiringer, “Validity of spin-wave theory
    for the quantum Heisenberg model,” <i>EPL</i>, vol. 108, no. 2. IOP Publishing,
    2014.
  ista: Correggi M, Giuliani A, Seiringer R. 2014. Validity of spin-wave theory for
    the quantum Heisenberg model. EPL. 108(2), 20003.
  mla: Correggi, Michele, et al. “Validity of Spin-Wave Theory for the Quantum Heisenberg
    Model.” <i>EPL</i>, vol. 108, no. 2, 20003, IOP Publishing, 2014, doi:<a href="https://doi.org/10.1209/0295-5075/108/20003">10.1209/0295-5075/108/20003</a>.
  short: M. Correggi, A. Giuliani, R. Seiringer, EPL 108 (2014).
date_created: 2018-12-11T11:55:18Z
date_published: 2014-10-13T00:00:00Z
date_updated: 2025-09-29T11:55:55Z
day: '13'
department:
- _id: RoSe
doi: 10.1209/0295-5075/108/20003
external_id:
  arxiv:
  - '1404.4717'
  isi:
  - '000344913300003'
intvolume: '       108'
isi: 1
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: http://arxiv.org/abs/1404.4717
month: '10'
oa: 1
oa_version: Submitted Version
publication: EPL
publication_status: published
publisher: IOP Publishing
publist_id: '5044'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Validity of spin-wave theory for the quantum Heisenberg model
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 108
year: '2014'
...
---
_id: '1889'
abstract:
- lang: eng
  text: We study translation-invariant quasi-free states for a system of fermions
    with two-particle interactions. The associated energy functional is similar to
    the BCS functional but also includes direct and exchange energies. We show that
    for suitable short-range interactions, these latter terms only lead to a renormalization
    of the chemical potential, with the usual properties of the BCS functional left
    unchanged. Our analysis thus represents a rigorous justification of part of the
    BCS approximation. We give bounds on the critical temperature below which the
    system displays superfluidity.
acknowledgement: We would like to thank Max Lein and Andreas Deuchert for valuable
  suggestions and remarks. Partial financial support by the NSERC (R.S.) is gratefully
  acknowledged.
article_number: '1450012'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Gerhard
  full_name: Bräunlich, Gerhard
  last_name: Bräunlich
- first_name: Christian
  full_name: Hainzl, Christian
  last_name: Hainzl
- first_name: Robert
  full_name: Seiringer, Robert
  id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
  last_name: Seiringer
  orcid: 0000-0002-6781-0521
citation:
  ama: Bräunlich G, Hainzl C, Seiringer R. Translation-invariant quasi-free states
    for fermionic systems and the BCS approximation. <i>Reviews in Mathematical Physics</i>.
    2014;26(7). doi:<a href="https://doi.org/10.1142/S0129055X14500123">10.1142/S0129055X14500123</a>
  apa: Bräunlich, G., Hainzl, C., &#38; Seiringer, R. (2014). Translation-invariant
    quasi-free states for fermionic systems and the BCS approximation. <i>Reviews
    in Mathematical Physics</i>. World Scientific Publishing. <a href="https://doi.org/10.1142/S0129055X14500123">https://doi.org/10.1142/S0129055X14500123</a>
  chicago: Bräunlich, Gerhard, Christian Hainzl, and Robert Seiringer. “Translation-Invariant
    Quasi-Free States for Fermionic Systems and the BCS Approximation.” <i>Reviews
    in Mathematical Physics</i>. World Scientific Publishing, 2014. <a href="https://doi.org/10.1142/S0129055X14500123">https://doi.org/10.1142/S0129055X14500123</a>.
  ieee: G. Bräunlich, C. Hainzl, and R. Seiringer, “Translation-invariant quasi-free
    states for fermionic systems and the BCS approximation,” <i>Reviews in Mathematical
    Physics</i>, vol. 26, no. 7. World Scientific Publishing, 2014.
  ista: Bräunlich G, Hainzl C, Seiringer R. 2014. Translation-invariant quasi-free
    states for fermionic systems and the BCS approximation. Reviews in Mathematical
    Physics. 26(7), 1450012.
  mla: Bräunlich, Gerhard, et al. “Translation-Invariant Quasi-Free States for Fermionic
    Systems and the BCS Approximation.” <i>Reviews in Mathematical Physics</i>, vol.
    26, no. 7, 1450012, World Scientific Publishing, 2014, doi:<a href="https://doi.org/10.1142/S0129055X14500123">10.1142/S0129055X14500123</a>.
  short: G. Bräunlich, C. Hainzl, R. Seiringer, Reviews in Mathematical Physics 26
    (2014).
date_created: 2018-12-11T11:54:33Z
date_published: 2014-08-01T00:00:00Z
date_updated: 2025-09-29T13:07:59Z
day: '01'
department:
- _id: RoSe
doi: 10.1142/S0129055X14500123
external_id:
  arxiv:
  - '1305.5135'
  isi:
  - '000341933500002'
intvolume: '        26'
isi: 1
issue: '7'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: http://arxiv.org/abs/1305.5135
month: '08'
oa: 1
oa_version: Submitted Version
publication: Reviews in Mathematical Physics
publication_status: published
publisher: World Scientific Publishing
publist_id: '5206'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Translation-invariant quasi-free states for fermionic systems and the BCS approximation
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 26
year: '2014'
...
---
_id: '1904'
abstract:
- lang: eng
  text: We prove a Strichartz inequality for a system of orthonormal functions, with
    an optimal behavior of the constant in the limit of a large number of functions.
    The estimate generalizes the usual Strichartz inequality, in the same fashion
    as the Lieb-Thirring inequality generalizes the Sobolev inequality. As an application,
    we consider the Schrödinger equation with a time-dependent potential and we show
    the existence of the wave operator in Schatten spaces.
article_processing_charge: No
arxiv: 1
author:
- first_name: Rupert
  full_name: Frank, Rupert
  last_name: Frank
- first_name: Mathieu
  full_name: Lewin, Mathieu
  last_name: Lewin
- 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: Frank R, Lewin M, Lieb É, Seiringer R. Strichartz inequality for orthonormal
    functions. <i>Journal of the European Mathematical Society</i>. 2014;16(7):1507-1526.
    doi:<a href="https://doi.org/10.4171/JEMS/467">10.4171/JEMS/467</a>
  apa: Frank, R., Lewin, M., Lieb, É., &#38; Seiringer, R. (2014). Strichartz inequality
    for orthonormal functions. <i>Journal of the European Mathematical Society</i>.
    European Mathematical Society. <a href="https://doi.org/10.4171/JEMS/467">https://doi.org/10.4171/JEMS/467</a>
  chicago: Frank, Rupert, Mathieu Lewin, Élliott Lieb, and Robert Seiringer. “Strichartz
    Inequality for Orthonormal Functions.” <i>Journal of the European Mathematical
    Society</i>. European Mathematical Society, 2014. <a href="https://doi.org/10.4171/JEMS/467">https://doi.org/10.4171/JEMS/467</a>.
  ieee: R. Frank, M. Lewin, É. Lieb, and R. Seiringer, “Strichartz inequality for
    orthonormal functions,” <i>Journal of the European Mathematical Society</i>, vol.
    16, no. 7. European Mathematical Society, pp. 1507–1526, 2014.
  ista: Frank R, Lewin M, Lieb É, Seiringer R. 2014. Strichartz inequality for orthonormal
    functions. Journal of the European Mathematical Society. 16(7), 1507–1526.
  mla: Frank, Rupert, et al. “Strichartz Inequality for Orthonormal Functions.” <i>Journal
    of the European Mathematical Society</i>, vol. 16, no. 7, European Mathematical
    Society, 2014, pp. 1507–26, doi:<a href="https://doi.org/10.4171/JEMS/467">10.4171/JEMS/467</a>.
  short: R. Frank, M. Lewin, É. Lieb, R. Seiringer, Journal of the European Mathematical
    Society 16 (2014) 1507–1526.
date_created: 2018-12-11T11:54:38Z
date_published: 2014-08-23T00:00:00Z
date_updated: 2025-09-29T12:28:54Z
day: '23'
department:
- _id: RoSe
doi: 10.4171/JEMS/467
external_id:
  arxiv:
  - '1306.1309'
  isi:
  - '000345494900006'
intvolume: '        16'
isi: 1
issue: '7'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: http://arxiv.org/abs/1306.1309
month: '08'
oa: 1
oa_version: Submitted Version
page: 1507 - 1526
project:
- _id: 26450934-B435-11E9-9278-68D0E5697425
  name: NSERC Postdoctoral fellowship
publication: Journal of the European Mathematical Society
publication_status: published
publisher: European Mathematical Society
publist_id: '5191'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Strichartz inequality for orthonormal functions
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 16
year: '2014'
...
---
_id: '1918'
abstract:
- lang: eng
  text: As the nuclear charge Z is continuously decreased an N-electron atom undergoes
    a binding-unbinding transition. We investigate whether the electrons remain bound
    and whether the radius of the system stays finite as the critical value Zc is
    approached. Existence of a ground state at Zc is shown under the condition Zc
    &lt; N-K, where K is the maximal number of electrons that can be removed at Zc
    without changing the energy.
article_number: '1350021'
article_processing_charge: No
arxiv: 1
author:
- first_name: Jacopo
  full_name: Bellazzini, Jacopo
  last_name: Bellazzini
- first_name: Rupert
  full_name: Frank, Rupert
  last_name: Frank
- 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: Bellazzini J, Frank R, Lieb É, Seiringer R. Existence of ground states for
    negative ions at the binding threshold. <i>Reviews in Mathematical Physics</i>.
    2014;26(1). doi:<a href="https://doi.org/10.1142/S0129055X13500219">10.1142/S0129055X13500219</a>
  apa: Bellazzini, J., Frank, R., Lieb, É., &#38; Seiringer, R. (2014). Existence
    of ground states for negative ions at the binding threshold. <i>Reviews in Mathematical
    Physics</i>. World Scientific Publishing. <a href="https://doi.org/10.1142/S0129055X13500219">https://doi.org/10.1142/S0129055X13500219</a>
  chicago: Bellazzini, Jacopo, Rupert Frank, Élliott Lieb, and Robert Seiringer. “Existence
    of Ground States for Negative Ions at the Binding Threshold.” <i>Reviews in Mathematical
    Physics</i>. World Scientific Publishing, 2014. <a href="https://doi.org/10.1142/S0129055X13500219">https://doi.org/10.1142/S0129055X13500219</a>.
  ieee: J. Bellazzini, R. Frank, É. Lieb, and R. Seiringer, “Existence of ground states
    for negative ions at the binding threshold,” <i>Reviews in Mathematical Physics</i>,
    vol. 26, no. 1. World Scientific Publishing, 2014.
  ista: Bellazzini J, Frank R, Lieb É, Seiringer R. 2014. Existence of ground states
    for negative ions at the binding threshold. Reviews in Mathematical Physics. 26(1),
    1350021.
  mla: Bellazzini, Jacopo, et al. “Existence of Ground States for Negative Ions at
    the Binding Threshold.” <i>Reviews in Mathematical Physics</i>, vol. 26, no. 1,
    1350021, World Scientific Publishing, 2014, doi:<a href="https://doi.org/10.1142/S0129055X13500219">10.1142/S0129055X13500219</a>.
  short: J. Bellazzini, R. Frank, É. Lieb, R. Seiringer, Reviews in Mathematical Physics
    26 (2014).
corr_author: '1'
date_created: 2018-12-11T11:54:42Z
date_published: 2014-02-01T00:00:00Z
date_updated: 2025-09-29T12:19:33Z
day: '01'
department:
- _id: RoSe
doi: 10.1142/S0129055X13500219
external_id:
  arxiv:
  - '1301.5370'
  isi:
  - '000329928300004'
intvolume: '        26'
isi: 1
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: http://arxiv.org/abs/1301.5370
month: '02'
oa: 1
oa_version: Submitted Version
project:
- _id: 26450934-B435-11E9-9278-68D0E5697425
  name: NSERC Postdoctoral fellowship
publication: Reviews in Mathematical Physics
publication_status: published
publisher: World Scientific Publishing
publist_id: '5176'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Existence of ground states for negative ions at the binding threshold
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 26
year: '2014'
...
---
_id: '1935'
abstract:
- lang: eng
  text: 'We consider Ising models in d = 2 and d = 3 dimensions with nearest neighbor
    ferromagnetic and long-range antiferromagnetic interactions, the latter decaying
    as (distance)-p, p &gt; 2d, at large distances. If the strength J of the ferromagnetic
    interaction is larger than a critical value J c, then the ground state is homogeneous.
    It has been conjectured that when J is smaller than but close to J c, the ground
    state is periodic and striped, with stripes of constant width h = h(J), and h
    → ∞ as J → Jc -. (In d = 3 stripes mean slabs, not columns.) Here we rigorously
    prove that, if we normalize the energy in such a way that the energy of the homogeneous
    state is zero, then the ratio e 0(J)/e S(J) tends to 1 as J → Jc -, with e S(J)
    being the energy per site of the optimal periodic striped/slabbed state and e
    0(J) the actual ground state energy per site of the system. Our proof comes with
    explicit bounds on the difference e 0(J)-e S(J) at small but positive J c-J, and
    also shows that in this parameter range the ground state is striped/slabbed in
    a certain sense: namely, if one looks at a randomly chosen window, of suitable
    size ℓ (very large compared to the optimal stripe size h(J)), one finds a striped/slabbed
    state with high probability.'
acknowledgement: "2014 by the authors. This paper may be reproduced, in its entirety,
  for non-commercial purposes.\r\n\r\nThe research leading to these results has received
  funding from the European Research\r\nCouncil under the European Union’s Seventh
  Framework Programme ERC Starting Grant CoMBoS (Grant Agreement No. 239694; A.G.
  and R.S.), the U.S. National Science Foundation (Grant PHY 0965859; E.H.L.), the
  Simons Foundation (Grant # 230207; E.H.L) and the NSERC (R.S.). The work is part
  of a project started in collaboration with Joel Lebowitz, whom we thank for many
  useful discussions and for his constant encouragement."
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Alessandro
  full_name: Giuliani, Alessandro
  last_name: Giuliani
- 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: Giuliani A, Lieb É, Seiringer R. Formation of stripes and slabs near the ferromagnetic
    transition. <i>Communications in Mathematical Physics</i>. 2014;331:333-350. doi:<a
    href="https://doi.org/10.1007/s00220-014-1923-2">10.1007/s00220-014-1923-2</a>
  apa: Giuliani, A., Lieb, É., &#38; Seiringer, R. (2014). Formation of stripes and
    slabs near the ferromagnetic transition. <i>Communications in Mathematical Physics</i>.
    Springer. <a href="https://doi.org/10.1007/s00220-014-1923-2">https://doi.org/10.1007/s00220-014-1923-2</a>
  chicago: Giuliani, Alessandro, Élliott Lieb, and Robert Seiringer. “Formation of
    Stripes and Slabs near the Ferromagnetic Transition.” <i>Communications in Mathematical
    Physics</i>. Springer, 2014. <a href="https://doi.org/10.1007/s00220-014-1923-2">https://doi.org/10.1007/s00220-014-1923-2</a>.
  ieee: A. Giuliani, É. Lieb, and R. Seiringer, “Formation of stripes and slabs near
    the ferromagnetic transition,” <i>Communications in Mathematical Physics</i>,
    vol. 331. Springer, pp. 333–350, 2014.
  ista: Giuliani A, Lieb É, Seiringer R. 2014. Formation of stripes and slabs near
    the ferromagnetic transition. Communications in Mathematical Physics. 331, 333–350.
  mla: Giuliani, Alessandro, et al. “Formation of Stripes and Slabs near the Ferromagnetic
    Transition.” <i>Communications in Mathematical Physics</i>, vol. 331, Springer,
    2014, pp. 333–50, doi:<a href="https://doi.org/10.1007/s00220-014-1923-2">10.1007/s00220-014-1923-2</a>.
  short: A. Giuliani, É. Lieb, R. Seiringer, Communications in Mathematical Physics
    331 (2014) 333–350.
date_created: 2018-12-11T11:54:48Z
date_published: 2014-10-01T00:00:00Z
date_updated: 2025-09-29T12:08:54Z
day: '01'
ddc:
- '510'
department:
- _id: RoSe
doi: 10.1007/s00220-014-1923-2
external_id:
  arxiv:
  - '1304.6344'
  isi:
  - '000339732500011'
file:
- access_level: open_access
  checksum: c8423271cd1e1ba9e44c47af75efe7b6
  content_type: application/pdf
  creator: dernst
  date_created: 2022-05-24T08:30:40Z
  date_updated: 2022-05-24T08:30:40Z
  file_id: '11409'
  file_name: 2014_CommMathPhysics_Giuliani.pdf
  file_size: 334064
  relation: main_file
  success: 1
file_date_updated: 2022-05-24T08:30:40Z
has_accepted_license: '1'
intvolume: '       331'
isi: 1
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
page: 333 - 350
publication: Communications in Mathematical Physics
publication_identifier:
  eissn:
  - 1432-0916
  issn:
  - 0010-3616
publication_status: published
publisher: Springer
publist_id: '5159'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Formation of stripes and slabs near the ferromagnetic transition
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 331
year: '2014'
...
---
_id: '1516'
abstract:
- lang: eng
  text: "We present a rigorous derivation of the BCS gap equation for superfluid fermionic
    gases with point interactions. Our starting point is the BCS energy functional,
    whose minimizer we investigate in the limit when the range of the interaction
    potential goes to zero.\r\n"
article_processing_charge: No
arxiv: 1
author:
- first_name: Gerhard
  full_name: Bräunlich, Gerhard
  last_name: Bräunlich
- first_name: Christian
  full_name: Hainzl, Christian
  last_name: Hainzl
- first_name: Robert
  full_name: Seiringer, Robert
  id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
  last_name: Seiringer
  orcid: 0000-0002-6781-0521
citation:
  ama: 'Bräunlich G, Hainzl C, Seiringer R. On the BCS gap equation for superfluid
    fermionic gases. In: <i>Proceedings of the QMath12 Conference</i>. World Scientific
    Publishing; 2014:127-137. doi:<a href="https://doi.org/10.1142/9789814618144_0007">10.1142/9789814618144_0007</a>'
  apa: 'Bräunlich, G., Hainzl, C., &#38; Seiringer, R. (2014). On the BCS gap equation
    for superfluid fermionic gases. In <i>Proceedings of the QMath12 Conference</i>
    (pp. 127–137). Berlin, Germany: World Scientific Publishing. <a href="https://doi.org/10.1142/9789814618144_0007">https://doi.org/10.1142/9789814618144_0007</a>'
  chicago: Bräunlich, Gerhard, Christian Hainzl, and Robert Seiringer. “On the BCS
    Gap Equation for Superfluid Fermionic Gases.” In <i>Proceedings of the QMath12
    Conference</i>, 127–37. World Scientific Publishing, 2014. <a href="https://doi.org/10.1142/9789814618144_0007">https://doi.org/10.1142/9789814618144_0007</a>.
  ieee: G. Bräunlich, C. Hainzl, and R. Seiringer, “On the BCS gap equation for superfluid
    fermionic gases,” in <i>Proceedings of the QMath12 Conference</i>, Berlin, Germany,
    2014, pp. 127–137.
  ista: 'Bräunlich G, Hainzl C, Seiringer R. 2014. On the BCS gap equation for superfluid
    fermionic gases. Proceedings of the QMath12 Conference. QMath: Mathematical Results
    in Quantum Physics, 127–137.'
  mla: Bräunlich, Gerhard, et al. “On the BCS Gap Equation for Superfluid Fermionic
    Gases.” <i>Proceedings of the QMath12 Conference</i>, World Scientific Publishing,
    2014, pp. 127–37, doi:<a href="https://doi.org/10.1142/9789814618144_0007">10.1142/9789814618144_0007</a>.
  short: G. Bräunlich, C. Hainzl, R. Seiringer, in:, Proceedings of the QMath12 Conference,
    World Scientific Publishing, 2014, pp. 127–137.
conference:
  end_date: 2013-09-13
  location: Berlin, Germany
  name: 'QMath: Mathematical Results in Quantum Physics'
  start_date: 2013-09-10
date_created: 2018-12-11T11:52:28Z
date_published: 2014-01-01T00:00:00Z
date_updated: 2021-01-12T06:51:19Z
day: '01'
department:
- _id: RoSe
doi: 10.1142/9789814618144_0007
external_id:
  arxiv:
  - '1403.2563'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/1403.2563
month: '01'
oa: 1
oa_version: Preprint
page: 127 - 137
publication: Proceedings of the QMath12 Conference
publication_status: published
publisher: World Scientific Publishing
publist_id: '5661'
quality_controlled: '1'
status: public
title: On the BCS gap equation for superfluid fermionic gases
type: conference
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
year: '2014'
...
---
_id: '10814'
abstract:
- lang: eng
  text: We review recent progress towards a rigorous understanding of the excitation
    spectrum of bosonic quantum many-body systems. In particular, we explain how one
    can rigorously establish the predictions resulting from the Bogoliubov approximation
    in the mean field limit. The latter predicts that the spectrum is made up of elementary
    excitations, whose energy behaves linearly in the momentum for small momentum.
    This property is crucial for the superfluid behavior of the system. We also discuss
    a list of open problems in this field.
article_processing_charge: No
article_type: original
author:
- first_name: Robert
  full_name: Seiringer, Robert
  id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
  last_name: Seiringer
  orcid: 0000-0002-6781-0521
citation:
  ama: Seiringer R. The excitation spectrum for Bose fluids with weak interactions.
    <i>Jahresbericht der Deutschen Mathematiker-Vereinigung</i>. 2014;116:21-41. doi:<a
    href="https://doi.org/10.1365/s13291-014-0083-9">10.1365/s13291-014-0083-9</a>
  apa: Seiringer, R. (2014). The excitation spectrum for Bose fluids with weak interactions.
    <i>Jahresbericht Der Deutschen Mathematiker-Vereinigung</i>. Springer Nature.
    <a href="https://doi.org/10.1365/s13291-014-0083-9">https://doi.org/10.1365/s13291-014-0083-9</a>
  chicago: Seiringer, Robert. “The Excitation Spectrum for Bose Fluids with Weak Interactions.”
    <i>Jahresbericht Der Deutschen Mathematiker-Vereinigung</i>. Springer Nature,
    2014. <a href="https://doi.org/10.1365/s13291-014-0083-9">https://doi.org/10.1365/s13291-014-0083-9</a>.
  ieee: R. Seiringer, “The excitation spectrum for Bose fluids with weak interactions,”
    <i>Jahresbericht der Deutschen Mathematiker-Vereinigung</i>, vol. 116. Springer
    Nature, pp. 21–41, 2014.
  ista: Seiringer R. 2014. The excitation spectrum for Bose fluids with weak interactions.
    Jahresbericht der Deutschen Mathematiker-Vereinigung. 116, 21–41.
  mla: Seiringer, Robert. “The Excitation Spectrum for Bose Fluids with Weak Interactions.”
    <i>Jahresbericht Der Deutschen Mathematiker-Vereinigung</i>, vol. 116, Springer
    Nature, 2014, pp. 21–41, doi:<a href="https://doi.org/10.1365/s13291-014-0083-9">10.1365/s13291-014-0083-9</a>.
  short: R. Seiringer, Jahresbericht Der Deutschen Mathematiker-Vereinigung 116 (2014)
    21–41.
corr_author: '1'
date_created: 2022-03-04T07:54:39Z
date_published: 2014-03-01T00:00:00Z
date_updated: 2024-10-09T21:01:45Z
day: '01'
department:
- _id: RoSe
doi: 10.1365/s13291-014-0083-9
intvolume: '       116'
keyword:
- General Medicine
language:
- iso: eng
month: '03'
oa_version: None
page: 21-41
publication: Jahresbericht der Deutschen Mathematiker-Vereinigung
publication_identifier:
  eissn:
  - 1869-7135
  issn:
  - 0012-0456
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: The excitation spectrum for Bose fluids with weak interactions
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 116
year: '2014'
...
---
_id: '2186'
abstract:
- lang: eng
  text: We prove the existence of scattering states for the defocusing cubic Gross-Pitaevskii
    (GP) hierarchy in ℝ3. Moreover, we show that an exponential energy growth condition
    commonly used in the well-posedness theory of the GP hierarchy is, in a specific
    sense, necessary. In fact, we prove that without the latter, there exist initial
    data for the focusing cubic GP hierarchy for which instantaneous blowup occurs.
article_processing_charge: No
arxiv: 1
author:
- first_name: Thomas
  full_name: Chen, Thomas
  last_name: Chen
- first_name: Christian
  full_name: Hainzl, Christian
  last_name: Hainzl
- first_name: Nataša
  full_name: Pavlović, Nataša
  last_name: Pavlović
- first_name: Robert
  full_name: Seiringer, Robert
  id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
  last_name: Seiringer
  orcid: 0000-0002-6781-0521
citation:
  ama: Chen T, Hainzl C, Pavlović N, Seiringer R. On the well-posedness and scattering
    for the Gross-Pitaevskii hierarchy via quantum de Finetti. <i>Letters in Mathematical
    Physics</i>. 2014;104(7):871-891. doi:<a href="https://doi.org/10.1007/s11005-014-0693-2">10.1007/s11005-014-0693-2</a>
  apa: Chen, T., Hainzl, C., Pavlović, N., &#38; Seiringer, R. (2014). On the well-posedness
    and scattering for the Gross-Pitaevskii hierarchy via quantum de Finetti. <i>Letters
    in Mathematical Physics</i>. Springer. <a href="https://doi.org/10.1007/s11005-014-0693-2">https://doi.org/10.1007/s11005-014-0693-2</a>
  chicago: Chen, Thomas, Christian Hainzl, Nataša Pavlović, and Robert Seiringer.
    “On the Well-Posedness and Scattering for the Gross-Pitaevskii Hierarchy via Quantum
    de Finetti.” <i>Letters in Mathematical Physics</i>. Springer, 2014. <a href="https://doi.org/10.1007/s11005-014-0693-2">https://doi.org/10.1007/s11005-014-0693-2</a>.
  ieee: T. Chen, C. Hainzl, N. Pavlović, and R. Seiringer, “On the well-posedness
    and scattering for the Gross-Pitaevskii hierarchy via quantum de Finetti,” <i>Letters
    in Mathematical Physics</i>, vol. 104, no. 7. Springer, pp. 871–891, 2014.
  ista: Chen T, Hainzl C, Pavlović N, Seiringer R. 2014. On the well-posedness and
    scattering for the Gross-Pitaevskii hierarchy via quantum de Finetti. Letters
    in Mathematical Physics. 104(7), 871–891.
  mla: Chen, Thomas, et al. “On the Well-Posedness and Scattering for the Gross-Pitaevskii
    Hierarchy via Quantum de Finetti.” <i>Letters in Mathematical Physics</i>, vol.
    104, no. 7, Springer, 2014, pp. 871–91, doi:<a href="https://doi.org/10.1007/s11005-014-0693-2">10.1007/s11005-014-0693-2</a>.
  short: T. Chen, C. Hainzl, N. Pavlović, R. Seiringer, Letters in Mathematical Physics
    104 (2014) 871–891.
date_created: 2018-12-11T11:56:12Z
date_published: 2014-05-07T00:00:00Z
date_updated: 2025-09-29T11:33:31Z
day: '07'
department:
- _id: RoSe
doi: 10.1007/s11005-014-0693-2
external_id:
  arxiv:
  - '1311.2136'
  isi:
  - '000336412300005'
intvolume: '       104'
isi: 1
issue: '7'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: http://arxiv.org/abs/1311.2136
month: '05'
oa: 1
oa_version: Submitted Version
page: 871 - 891
project:
- _id: 26450934-B435-11E9-9278-68D0E5697425
  name: NSERC Postdoctoral fellowship
publication: Letters in Mathematical Physics
publication_status: published
publisher: Springer
publist_id: '4793'
quality_controlled: '1'
scopus_import: '1'
status: public
title: On the well-posedness and scattering for the Gross-Pitaevskii hierarchy via
  quantum de Finetti
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 104
year: '2014'
...
---
_id: '2281'
abstract:
- lang: eng
  text: We consider two-dimensional Bose-Einstein condensates with attractive interaction,
    described by the Gross-Pitaevskii functional. Minimizers of this functional exist
    only if the interaction strength a satisfies {Mathematical expression}, where
    Q is the unique positive radial solution of {Mathematical expression} in {Mathematical
    expression}. We present a detailed analysis of the behavior of minimizers as a
    approaches a*, where all the mass concentrates at a global minimum of the trapping
    potential.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Yujin
  full_name: Guo, Yujin
  last_name: Guo
- first_name: Robert
  full_name: Seiringer, Robert
  id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
  last_name: Seiringer
  orcid: 0000-0002-6781-0521
citation:
  ama: Guo Y, Seiringer R. On the mass concentration for Bose-Einstein condensates
    with attractive interactions. <i>Letters in Mathematical Physics</i>. 2014;104(2):141-156.
    doi:<a href="https://doi.org/10.1007/s11005-013-0667-9">10.1007/s11005-013-0667-9</a>
  apa: Guo, Y., &#38; Seiringer, R. (2014). On the mass concentration for Bose-Einstein
    condensates with attractive interactions. <i>Letters in Mathematical Physics</i>.
    Springer. <a href="https://doi.org/10.1007/s11005-013-0667-9">https://doi.org/10.1007/s11005-013-0667-9</a>
  chicago: Guo, Yujin, and Robert Seiringer. “On the Mass Concentration for Bose-Einstein
    Condensates with Attractive Interactions.” <i>Letters in Mathematical Physics</i>.
    Springer, 2014. <a href="https://doi.org/10.1007/s11005-013-0667-9">https://doi.org/10.1007/s11005-013-0667-9</a>.
  ieee: Y. Guo and R. Seiringer, “On the mass concentration for Bose-Einstein condensates
    with attractive interactions,” <i>Letters in Mathematical Physics</i>, vol. 104,
    no. 2. Springer, pp. 141–156, 2014.
  ista: Guo Y, Seiringer R. 2014. On the mass concentration for Bose-Einstein condensates
    with attractive interactions. Letters in Mathematical Physics. 104(2), 141–156.
  mla: Guo, Yujin, and Robert Seiringer. “On the Mass Concentration for Bose-Einstein
    Condensates with Attractive Interactions.” <i>Letters in Mathematical Physics</i>,
    vol. 104, no. 2, Springer, 2014, pp. 141–56, doi:<a href="https://doi.org/10.1007/s11005-013-0667-9">10.1007/s11005-013-0667-9</a>.
  short: Y. Guo, R. Seiringer, Letters in Mathematical Physics 104 (2014) 141–156.
corr_author: '1'
date_created: 2018-12-11T11:56:44Z
date_published: 2014-02-01T00:00:00Z
date_updated: 2025-09-29T11:12:19Z
day: '01'
department:
- _id: RoSe
doi: 10.1007/s11005-013-0667-9
external_id:
  arxiv:
  - '1301.5682'
  isi:
  - '000330128000002'
intvolume: '       104'
isi: 1
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: http://arxiv.org/abs/1301.5682
month: '02'
oa: 1
oa_version: Preprint
page: 141 - 156
publication: Letters in Mathematical Physics
publication_status: published
publisher: Springer
publist_id: '4653'
quality_controlled: '1'
scopus_import: '1'
status: public
title: On the mass concentration for Bose-Einstein condensates with attractive interactions
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 104
year: '2014'
...
---
OA_place: publisher
OA_type: free access
_id: '8044'
abstract:
- lang: eng
  text: Many questions concerning models in quantum mechanics require a detailed analysis
    of the spectrum of the corresponding Hamiltonian, a linear operator on a suitable
    Hilbert space. Of particular relevance for an understanding of the low-temperature
    properties of a system is the structure of the excitation spectrum, which is the
    part of the spectrum close to the spectral bottom. We present recent progress
    on this question for bosonic many-body quantum systems with weak two-body interactions.
    Such system are currently of great interest, due to their experimental realization
    in ultra-cold atomic gases. We investigate the accuracy of the Bogoliubov approximations,
    which predicts that the low-energy spectrum is made up of sums of elementary excitations,
    with linear dispersion law at low momentum. The latter property is crucial for
    the superfluid behavior the system.
article_processing_charge: No
author:
- first_name: Robert
  full_name: Seiringer, Robert
  id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
  last_name: Seiringer
  orcid: 0000-0002-6781-0521
citation:
  ama: 'Seiringer R. Structure of the excitation spectrum for many-body quantum systems.
    In: <i>Proceeding of the International Congress of Mathematicans</i>. Vol 3. International
    Congress of Mathematicians; 2014:1175-1194.'
  apa: 'Seiringer, R. (2014). Structure of the excitation spectrum for many-body quantum
    systems. In <i>Proceeding of the International Congress of Mathematicans</i> (Vol.
    3, pp. 1175–1194). Seoul, South Korea: International Congress of Mathematicians.'
  chicago: Seiringer, Robert. “Structure of the Excitation Spectrum for Many-Body
    Quantum Systems.” In <i>Proceeding of the International Congress of Mathematicans</i>,
    3:1175–94. International Congress of Mathematicians, 2014.
  ieee: R. Seiringer, “Structure of the excitation spectrum for many-body quantum
    systems,” in <i>Proceeding of the International Congress of Mathematicans</i>,
    Seoul, South Korea, 2014, vol. 3, pp. 1175–1194.
  ista: 'Seiringer R. 2014. Structure of the excitation spectrum for many-body quantum
    systems. Proceeding of the International Congress of Mathematicans. ICM: International
    Congress of Mathematicans vol. 3, 1175–1194.'
  mla: Seiringer, Robert. “Structure of the Excitation Spectrum for Many-Body Quantum
    Systems.” <i>Proceeding of the International Congress of Mathematicans</i>, vol.
    3, International Congress of Mathematicians, 2014, pp. 1175–94.
  short: R. Seiringer, in:, Proceeding of the International Congress of Mathematicans,
    International Congress of Mathematicians, 2014, pp. 1175–1194.
conference:
  end_date: 2014-08-21
  location: Seoul, South Korea
  name: 'ICM: International Congress of Mathematicans'
  start_date: 2014-08-13
corr_author: '1'
date_created: 2020-06-29T07:59:35Z
date_published: 2014-08-01T00:00:00Z
date_updated: 2025-07-15T08:39:50Z
day: '01'
department:
- _id: RoSe
intvolume: '         3'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: http://www.icm2014.org/en/vod/proceedings.html
month: '08'
oa: 1
oa_version: Published Version
page: 1175-1194
publication: Proceeding of the International Congress of Mathematicans
publication_identifier:
  isbn:
  - '9788961058063'
publication_status: published
publisher: International Congress of Mathematicians
quality_controlled: '1'
scopus_import: '1'
status: public
title: Structure of the excitation spectrum for many-body quantum systems
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 3
year: '2014'
...
---
_id: '2297'
abstract:
- lang: eng
  text: We present an overview of mathematical results on the low temperature properties
    of dilute quantum gases, which have been obtained in the past few years. The presentation
    includes a discussion of Bose-Einstein condensation, the excitation spectrum for
    trapped gases and its relation to superfluidity, as well as the appearance of
    quantized vortices in rotating systems. All these properties are intensely being
    studied in current experiments on cold atomic gases. We will give a description
    of the mathematics involved in understanding these phenomena, starting from the
    underlying many-body Schrödinger equation.
article_processing_charge: No
arxiv: 1
author:
- first_name: Robert
  full_name: Seiringer, Robert
  id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
  last_name: Seiringer
  orcid: 0000-0002-6781-0521
citation:
  ama: 'Seiringer R. Hot topics in cold gases: A mathematical physics perspective.
    <i>Japanese Journal of Mathematics</i>. 2013;8(2):185-232. doi:<a href="https://doi.org/10.1007/s11537-013-1264-5">10.1007/s11537-013-1264-5</a>'
  apa: 'Seiringer, R. (2013). Hot topics in cold gases: A mathematical physics perspective.
    <i>Japanese Journal of Mathematics</i>. Springer. <a href="https://doi.org/10.1007/s11537-013-1264-5">https://doi.org/10.1007/s11537-013-1264-5</a>'
  chicago: 'Seiringer, Robert. “Hot Topics in Cold Gases: A Mathematical Physics Perspective.”
    <i>Japanese Journal of Mathematics</i>. Springer, 2013. <a href="https://doi.org/10.1007/s11537-013-1264-5">https://doi.org/10.1007/s11537-013-1264-5</a>.'
  ieee: 'R. Seiringer, “Hot topics in cold gases: A mathematical physics perspective,”
    <i>Japanese Journal of Mathematics</i>, vol. 8, no. 2. Springer, pp. 185–232,
    2013.'
  ista: 'Seiringer R. 2013. Hot topics in cold gases: A mathematical physics perspective.
    Japanese Journal of Mathematics. 8(2), 185–232.'
  mla: 'Seiringer, Robert. “Hot Topics in Cold Gases: A Mathematical Physics Perspective.”
    <i>Japanese Journal of Mathematics</i>, vol. 8, no. 2, Springer, 2013, pp. 185–232,
    doi:<a href="https://doi.org/10.1007/s11537-013-1264-5">10.1007/s11537-013-1264-5</a>.'
  short: R. Seiringer, Japanese Journal of Mathematics 8 (2013) 185–232.
corr_author: '1'
date_created: 2018-12-11T11:56:50Z
date_published: 2013-09-24T00:00:00Z
date_updated: 2025-09-29T14:19:17Z
day: '24'
department:
- _id: RoSe
doi: 10.1007/s11537-013-1264-5
external_id:
  arxiv:
  - '0908.3686'
  isi:
  - '000324648700001'
intvolume: '         8'
isi: 1
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: http://arxiv.org/abs/0908.3686
month: '09'
oa: 1
oa_version: Preprint
page: 185 - 232
publication: Japanese Journal of Mathematics
publication_status: published
publisher: Springer
publist_id: '4631'
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Hot topics in cold gases: A mathematical physics perspective'
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 8
year: '2013'
...
