---
_id: '64289'
abstract:
- lang: eng
  text: "<jats:title>Abstract</jats:title>\r\n          <jats:p>Motivated by asymptotic
    symmetry groups in general relativity, we consider projective unitary representations
    <jats:inline-formula>\r\n              <jats:alternatives>\r\n                <jats:tex-math>$$\\overline{\\rho
    }$$</jats:tex-math>\r\n                <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\">\r\n
    \                 <mml:mover>\r\n                    <mml:mi>ρ</mml:mi>\r\n                    <mml:mo>¯</mml:mo>\r\n
    \                 </mml:mover>\r\n                </mml:math>\r\n              </jats:alternatives>\r\n
    \           </jats:inline-formula> of the Lie group <jats:inline-formula>\r\n
    \             <jats:alternatives>\r\n                <jats:tex-math>$${{\\,\\textrm{Diff}\\,}}_c(M)$$</jats:tex-math>\r\n
    \               <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\">\r\n
    \                 <mml:mrow>\r\n                    <mml:msub>\r\n                      <mml:mrow>\r\n
    \                       <mml:mspace/>\r\n                        <mml:mtext>Diff</mml:mtext>\r\n
    \                       <mml:mspace/>\r\n                      </mml:mrow>\r\n
    \                     <mml:mi>c</mml:mi>\r\n                    </mml:msub>\r\n
    \                   <mml:mrow>\r\n                      <mml:mo>(</mml:mo>\r\n
    \                     <mml:mi>M</mml:mi>\r\n                      <mml:mo>)</mml:mo>\r\n
    \                   </mml:mrow>\r\n                  </mml:mrow>\r\n                </mml:math>\r\n
    \             </jats:alternatives>\r\n            </jats:inline-formula> of compactly
    supported diffeomorphisms of a smooth manifold <jats:italic>M</jats:italic> that
    satisfy a so-called generalized positive energy condition. In particular, this
    captures representations that are in a suitable sense compatible with a KMS state
    on the von Neumann algebra generated by <jats:inline-formula>\r\n              <jats:alternatives>\r\n
    \               <jats:tex-math>$$\\overline{\\rho }$$</jats:tex-math>\r\n                <mml:math
    xmlns:mml=\"http://www.w3.org/1998/Math/MathML\">\r\n                  <mml:mover>\r\n
    \                   <mml:mi>ρ</mml:mi>\r\n                    <mml:mo>¯</mml:mo>\r\n
    \                 </mml:mover>\r\n                </mml:math>\r\n              </jats:alternatives>\r\n
    \           </jats:inline-formula>. We show that if <jats:italic>M</jats:italic>
    is connected and <jats:inline-formula>\r\n              <jats:alternatives>\r\n
    \               <jats:tex-math>$$\\dim (M) &gt; 1$$</jats:tex-math>\r\n                <mml:math
    xmlns:mml=\"http://www.w3.org/1998/Math/MathML\">\r\n                  <mml:mrow>\r\n
    \                   <mml:mo>dim</mml:mo>\r\n                    <mml:mo>(</mml:mo>\r\n
    \                   <mml:mi>M</mml:mi>\r\n                    <mml:mo>)</mml:mo>\r\n
    \                   <mml:mo>&gt;</mml:mo>\r\n                    <mml:mn>1</mml:mn>\r\n
    \                 </mml:mrow>\r\n                </mml:math>\r\n              </jats:alternatives>\r\n
    \           </jats:inline-formula>, then any such representation is necessarily
    trivial on the identity component <jats:inline-formula>\r\n              <jats:alternatives>\r\n
    \               <jats:tex-math>$${{\\,\\textrm{Diff}\\,}}_c(M)_0$$</jats:tex-math>\r\n
    \               <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\">\r\n
    \                 <mml:mrow>\r\n                    <mml:msub>\r\n                      <mml:mrow>\r\n
    \                       <mml:mspace/>\r\n                        <mml:mtext>Diff</mml:mtext>\r\n
    \                       <mml:mspace/>\r\n                      </mml:mrow>\r\n
    \                     <mml:mi>c</mml:mi>\r\n                    </mml:msub>\r\n
    \                   <mml:msub>\r\n                      <mml:mrow>\r\n                        <mml:mo>(</mml:mo>\r\n
    \                       <mml:mi>M</mml:mi>\r\n                        <mml:mo>)</mml:mo>\r\n
    \                     </mml:mrow>\r\n                      <mml:mn>0</mml:mn>\r\n
    \                   </mml:msub>\r\n                  </mml:mrow>\r\n                </mml:math>\r\n
    \             </jats:alternatives>\r\n            </jats:inline-formula>. As an
    intermediate step towards this result, we determine the continuous second Lie
    algebra cohomology <jats:inline-formula>\r\n              <jats:alternatives>\r\n
    \               <jats:tex-math>$$H^2_\\textrm{ct}(\\mathcal {X}_c(M), \\mathbb
    {R})$$</jats:tex-math>\r\n                <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\">\r\n
    \                 <mml:mrow>\r\n                    <mml:msubsup>\r\n                      <mml:mi>H</mml:mi>\r\n
    \                     <mml:mtext>ct</mml:mtext>\r\n                      <mml:mn>2</mml:mn>\r\n
    \                   </mml:msubsup>\r\n                    <mml:mrow>\r\n                      <mml:mo>(</mml:mo>\r\n
    \                     <mml:msub>\r\n                        <mml:mi>X</mml:mi>\r\n
    \                       <mml:mi>c</mml:mi>\r\n                      </mml:msub>\r\n
    \                     <mml:mrow>\r\n                        <mml:mo>(</mml:mo>\r\n
    \                       <mml:mi>M</mml:mi>\r\n                        <mml:mo>)</mml:mo>\r\n
    \                     </mml:mrow>\r\n                      <mml:mo>,</mml:mo>\r\n
    \                     <mml:mi>R</mml:mi>\r\n                      <mml:mo>)</mml:mo>\r\n
    \                   </mml:mrow>\r\n                  </mml:mrow>\r\n                </mml:math>\r\n
    \             </jats:alternatives>\r\n            </jats:inline-formula> of the
    Lie algebra of compactly supported vector fields. This is subtly different from
    Gelfand–Fuks cohomology in view of the compact support condition.</jats:p>"
article_number: '45'
author:
- first_name: Bas
  full_name: Janssens, Bas
  last_name: Janssens
- first_name: Milan
  full_name: Niestijl, Milan
  last_name: Niestijl
citation:
  ama: Janssens B, Niestijl M. Generalized Positive Energy Representations of the
    Group of Compactly Supported Diffeomorphisms. <i>Communications in Mathematical
    Physics</i>. 2025;406(2). doi:<a href="https://doi.org/10.1007/s00220-024-05226-w">10.1007/s00220-024-05226-w</a>
  apa: Janssens, B., &#38; Niestijl, M. (2025). Generalized Positive Energy Representations
    of the Group of Compactly Supported Diffeomorphisms. <i>Communications in Mathematical
    Physics</i>, <i>406</i>(2), Article 45. <a href="https://doi.org/10.1007/s00220-024-05226-w">https://doi.org/10.1007/s00220-024-05226-w</a>
  bibtex: '@article{Janssens_Niestijl_2025, title={Generalized Positive Energy Representations
    of the Group of Compactly Supported Diffeomorphisms}, volume={406}, DOI={<a href="https://doi.org/10.1007/s00220-024-05226-w">10.1007/s00220-024-05226-w</a>},
    number={245}, journal={Communications in Mathematical Physics}, publisher={Springer
    Science and Business Media LLC}, author={Janssens, Bas and Niestijl, Milan}, year={2025}
    }'
  chicago: Janssens, Bas, and Milan Niestijl. “Generalized Positive Energy Representations
    of the Group of Compactly Supported Diffeomorphisms.” <i>Communications in Mathematical
    Physics</i> 406, no. 2 (2025). <a href="https://doi.org/10.1007/s00220-024-05226-w">https://doi.org/10.1007/s00220-024-05226-w</a>.
  ieee: 'B. Janssens and M. Niestijl, “Generalized Positive Energy Representations
    of the Group of Compactly Supported Diffeomorphisms,” <i>Communications in Mathematical
    Physics</i>, vol. 406, no. 2, Art. no. 45, 2025, doi: <a href="https://doi.org/10.1007/s00220-024-05226-w">10.1007/s00220-024-05226-w</a>.'
  mla: Janssens, Bas, and Milan Niestijl. “Generalized Positive Energy Representations
    of the Group of Compactly Supported Diffeomorphisms.” <i>Communications in Mathematical
    Physics</i>, vol. 406, no. 2, 45, Springer Science and Business Media LLC, 2025,
    doi:<a href="https://doi.org/10.1007/s00220-024-05226-w">10.1007/s00220-024-05226-w</a>.
  short: B. Janssens, M. Niestijl, Communications in Mathematical Physics 406 (2025).
date_created: 2026-02-20T09:33:11Z
date_updated: 2026-02-20T09:41:41Z
department:
- _id: '93'
doi: 10.1007/s00220-024-05226-w
intvolume: '       406'
issue: '2'
language:
- iso: eng
publication: Communications in Mathematical Physics
publication_identifier:
  issn:
  - 0010-3616
  - 1432-0916
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: Generalized Positive Energy Representations of the Group of Compactly Supported
  Diffeomorphisms
type: journal_article
user_id: '104095'
volume: 406
year: '2025'
...
---
_id: '66291'
abstract:
- lang: eng
  text: "<jats:title>Abstract</jats:title>\r\n          <jats:p>In 1993 Keski-Vakkuri
    and Wen introduced a model for the fractional quantum Hall effect based on multilayer
    two-dimensional electron systems satisfying quasi-periodic boundary conditions.
    Such a model is essentially specified by a choice of a complex torus <jats:italic>E</jats:italic>
    and a symmetric positively definite matrix <jats:italic>K</jats:italic> of size
    <jats:italic>g</jats:italic> with non-negative integral coefficients, satisfying
    some further constraints. The space of the corresponding wave functions turns
    out to be <jats:inline-formula>\r\n              <jats:alternatives>\r\n                <jats:tex-math>$$\\delta
    $$</jats:tex-math>\r\n                <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\">\r\n
    \                 <mml:mi>δ</mml:mi>\r\n                </mml:math>\r\n              </jats:alternatives>\r\n
    \           </jats:inline-formula>-dimensional, where <jats:inline-formula>\r\n
    \             <jats:alternatives>\r\n                <jats:tex-math>$$\\delta
    $$</jats:tex-math>\r\n                <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\">\r\n
    \                 <mml:mi>δ</mml:mi>\r\n                </mml:math>\r\n              </jats:alternatives>\r\n
    \           </jats:inline-formula> is the determinant of <jats:italic>K</jats:italic>.
    We construct a hermitian holomorphic bundle of rank <jats:inline-formula>\r\n
    \             <jats:alternatives>\r\n                <jats:tex-math>$$\\delta
    $$</jats:tex-math>\r\n                <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\">\r\n
    \                 <mml:mi>δ</mml:mi>\r\n                </mml:math>\r\n              </jats:alternatives>\r\n
    \           </jats:inline-formula> on the abelian variety <jats:italic>A</jats:italic>
    (which is the <jats:italic>g</jats:italic>-fold product of the torus <jats:italic>E</jats:italic>
    with itself), whose fibres can be identified with the space of wave function of
    Keski-Vakkuri and Wen. A rigorous construction of this “magnetic bundle” involves
    the technique of Fourier–Mukai transforms on abelian varieties. The constructed
    bundle turns out to be simple and semi-homogeneous and it can be equipped with
    two different (and natural) hermitian metrics: the one coming from the center-of-mass
    dynamics and the one coming from the Hilbert space of the underlying many-body
    system. We prove that the canonical Bott–Chern connection of the first hermitian
    metric is always projectively flat and give sufficient conditions for this property
    for the second hermitian metric.</jats:p>"
article_number: '97'
author:
- first_name: Igor
  full_name: Burban, Igor
  id: '72064'
  last_name: Burban
- first_name: Semyon
  full_name: Klevtsov, Semyon
  last_name: Klevtsov
citation:
  ama: Burban I, Klevtsov S. Algebraic Geometry of the Multilayer Model of the Fractional
    Quantum Hall Effect on a Torus. <i>Communications in Mathematical Physics</i>.
    2025;406(5). doi:<a href="https://doi.org/10.1007/s00220-025-05267-9">10.1007/s00220-025-05267-9</a>
  apa: Burban, I., &#38; Klevtsov, S. (2025). Algebraic Geometry of the Multilayer
    Model of the Fractional Quantum Hall Effect on a Torus. <i>Communications in Mathematical
    Physics</i>, <i>406</i>(5), Article 97. <a href="https://doi.org/10.1007/s00220-025-05267-9">https://doi.org/10.1007/s00220-025-05267-9</a>
  bibtex: '@article{Burban_Klevtsov_2025, title={Algebraic Geometry of the Multilayer
    Model of the Fractional Quantum Hall Effect on a Torus}, volume={406}, DOI={<a
    href="https://doi.org/10.1007/s00220-025-05267-9">10.1007/s00220-025-05267-9</a>},
    number={597}, journal={Communications in Mathematical Physics}, publisher={Springer
    Science and Business Media LLC}, author={Burban, Igor and Klevtsov, Semyon}, year={2025}
    }'
  chicago: Burban, Igor, and Semyon Klevtsov. “Algebraic Geometry of the Multilayer
    Model of the Fractional Quantum Hall Effect on a Torus.” <i>Communications in
    Mathematical Physics</i> 406, no. 5 (2025). <a href="https://doi.org/10.1007/s00220-025-05267-9">https://doi.org/10.1007/s00220-025-05267-9</a>.
  ieee: 'I. Burban and S. Klevtsov, “Algebraic Geometry of the Multilayer Model of
    the Fractional Quantum Hall Effect on a Torus,” <i>Communications in Mathematical
    Physics</i>, vol. 406, no. 5, Art. no. 97, 2025, doi: <a href="https://doi.org/10.1007/s00220-025-05267-9">10.1007/s00220-025-05267-9</a>.'
  mla: Burban, Igor, and Semyon Klevtsov. “Algebraic Geometry of the Multilayer Model
    of the Fractional Quantum Hall Effect on a Torus.” <i>Communications in Mathematical
    Physics</i>, vol. 406, no. 5, 97, Springer Science and Business Media LLC, 2025,
    doi:<a href="https://doi.org/10.1007/s00220-025-05267-9">10.1007/s00220-025-05267-9</a>.
  short: I. Burban, S. Klevtsov, Communications in Mathematical Physics 406 (2025).
date_created: 2026-07-07T06:18:00Z
date_updated: 2026-07-07T06:18:58Z
doi: 10.1007/s00220-025-05267-9
intvolume: '       406'
issue: '5'
language:
- iso: eng
publication: Communications in Mathematical Physics
publication_identifier:
  issn:
  - 0010-3616
  - 1432-0916
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: Algebraic Geometry of the Multilayer Model of the Fractional Quantum Hall Effect
  on a Torus
type: journal_article
user_id: '72064'
volume: 406
year: '2025'
...
---
_id: '43465'
abstract:
- lang: eng
  text: We show the existence of ground states in the massless spin boson model without
    any infrared regularization. Our proof is non-perturbative and relies on a compactness
    argument. It works for arbitrary values of the coupling constant under the hypothesis
    that the second derivative of the ground state energy as a function of a constant
    external magnetic field is bounded.
article_type: original
author:
- first_name: David
  full_name: Hasler, David
  last_name: Hasler
- first_name: Benjamin
  full_name: Hinrichs, Benjamin
  id: '99427'
  last_name: Hinrichs
  orcid: 0000-0001-9074-1205
- first_name: Oliver
  full_name: Siebert, Oliver
  last_name: Siebert
citation:
  ama: Hasler D, Hinrichs B, Siebert O. On Existence of Ground States in the Spin
    Boson Model. <i>Communications in Mathematical Physics</i>. 2021;388(1):419-433.
    doi:<a href="https://doi.org/10.1007/s00220-021-04185-w">10.1007/s00220-021-04185-w</a>
  apa: Hasler, D., Hinrichs, B., &#38; Siebert, O. (2021). On Existence of Ground
    States in the Spin Boson Model. <i>Communications in Mathematical Physics</i>,
    <i>388</i>(1), 419–433. <a href="https://doi.org/10.1007/s00220-021-04185-w">https://doi.org/10.1007/s00220-021-04185-w</a>
  bibtex: '@article{Hasler_Hinrichs_Siebert_2021, title={On Existence of Ground States
    in the Spin Boson Model}, volume={388}, DOI={<a href="https://doi.org/10.1007/s00220-021-04185-w">10.1007/s00220-021-04185-w</a>},
    number={1}, journal={Communications in Mathematical Physics}, publisher={Springer
    Science and Business Media LLC}, author={Hasler, David and Hinrichs, Benjamin
    and Siebert, Oliver}, year={2021}, pages={419–433} }'
  chicago: 'Hasler, David, Benjamin Hinrichs, and Oliver Siebert. “On Existence of
    Ground States in the Spin Boson Model.” <i>Communications in Mathematical Physics</i>
    388, no. 1 (2021): 419–33. <a href="https://doi.org/10.1007/s00220-021-04185-w">https://doi.org/10.1007/s00220-021-04185-w</a>.'
  ieee: 'D. Hasler, B. Hinrichs, and O. Siebert, “On Existence of Ground States in
    the Spin Boson Model,” <i>Communications in Mathematical Physics</i>, vol. 388,
    no. 1, pp. 419–433, 2021, doi: <a href="https://doi.org/10.1007/s00220-021-04185-w">10.1007/s00220-021-04185-w</a>.'
  mla: Hasler, David, et al. “On Existence of Ground States in the Spin Boson Model.”
    <i>Communications in Mathematical Physics</i>, vol. 388, no. 1, Springer Science
    and Business Media LLC, 2021, pp. 419–33, doi:<a href="https://doi.org/10.1007/s00220-021-04185-w">10.1007/s00220-021-04185-w</a>.
  short: D. Hasler, B. Hinrichs, O. Siebert, Communications in Mathematical Physics
    388 (2021) 419–433.
date_created: 2023-04-13T18:07:22Z
date_updated: 2026-01-16T09:02:44Z
doi: 10.1007/s00220-021-04185-w
extern: '1'
external_id:
  arxiv:
  - '2102.13373'
intvolume: '       388'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
page: 419-433
publication: Communications in Mathematical Physics
publication_identifier:
  issn:
  - 0010-3616
  - 1432-0916
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: On Existence of Ground States in the Spin Boson Model
type: journal_article
user_id: '99427'
volume: 388
year: '2021'
...
---
_id: '31264'
abstract:
- lang: eng
  text: "<jats:title>Abstract</jats:title><jats:p>Given a closed orientable hyperbolic
    manifold of dimension <jats:inline-formula><jats:alternatives><jats:tex-math>$$\\ne
    3$$</jats:tex-math><mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\">\r\n
    \                 <mml:mrow>\r\n                    <mml:mo>≠</mml:mo>\r\n                    <mml:mn>3</mml:mn>\r\n
    \                 </mml:mrow>\r\n                </mml:math></jats:alternatives></jats:inline-formula>
    we prove that the multiplicity of the Pollicott-Ruelle resonance of the geodesic
    flow on perpendicular one-forms at zero agrees with the first Betti number of
    the manifold. Additionally, we prove that this equality is stable under small
    perturbations of the Riemannian metric and simultaneous small perturbations of
    the geodesic vector field within the class of contact vector fields. For more
    general perturbations we get bounds on the multiplicity of the resonance zero
    on all one-forms in terms of the first and zeroth Betti numbers. Furthermore,
    we identify for hyperbolic manifolds further resonance spaces whose multiplicities
    are given by higher Betti numbers.\r\n</jats:p>"
author:
- first_name: Benjamin
  full_name: Küster, Benjamin
  last_name: Küster
- first_name: Tobias
  full_name: Weich, Tobias
  id: '49178'
  last_name: Weich
  orcid: 0000-0002-9648-6919
citation:
  ama: Küster B, Weich T. Pollicott-Ruelle Resonant States and Betti Numbers. <i>Communications
    in Mathematical Physics</i>. 2020;378(2):917-941. doi:<a href="https://doi.org/10.1007/s00220-020-03793-2">10.1007/s00220-020-03793-2</a>
  apa: Küster, B., &#38; Weich, T. (2020). Pollicott-Ruelle Resonant States and Betti
    Numbers. <i>Communications in Mathematical Physics</i>, <i>378</i>(2), 917–941.
    <a href="https://doi.org/10.1007/s00220-020-03793-2">https://doi.org/10.1007/s00220-020-03793-2</a>
  bibtex: '@article{Küster_Weich_2020, title={Pollicott-Ruelle Resonant States and
    Betti Numbers}, volume={378}, DOI={<a href="https://doi.org/10.1007/s00220-020-03793-2">10.1007/s00220-020-03793-2</a>},
    number={2}, journal={Communications in Mathematical Physics}, publisher={Springer
    Science and Business Media LLC}, author={Küster, Benjamin and Weich, Tobias},
    year={2020}, pages={917–941} }'
  chicago: 'Küster, Benjamin, and Tobias Weich. “Pollicott-Ruelle Resonant States
    and Betti Numbers.” <i>Communications in Mathematical Physics</i> 378, no. 2 (2020):
    917–41. <a href="https://doi.org/10.1007/s00220-020-03793-2">https://doi.org/10.1007/s00220-020-03793-2</a>.'
  ieee: 'B. Küster and T. Weich, “Pollicott-Ruelle Resonant States and Betti Numbers,”
    <i>Communications in Mathematical Physics</i>, vol. 378, no. 2, pp. 917–941, 2020,
    doi: <a href="https://doi.org/10.1007/s00220-020-03793-2">10.1007/s00220-020-03793-2</a>.'
  mla: Küster, Benjamin, and Tobias Weich. “Pollicott-Ruelle Resonant States and Betti
    Numbers.” <i>Communications in Mathematical Physics</i>, vol. 378, no. 2, Springer
    Science and Business Media LLC, 2020, pp. 917–41, doi:<a href="https://doi.org/10.1007/s00220-020-03793-2">10.1007/s00220-020-03793-2</a>.
  short: B. Küster, T. Weich, Communications in Mathematical Physics 378 (2020) 917–941.
date_created: 2022-05-17T12:06:06Z
date_updated: 2022-05-19T10:13:48Z
department:
- _id: '10'
- _id: '623'
- _id: '548'
doi: 10.1007/s00220-020-03793-2
intvolume: '       378'
issue: '2'
keyword:
- Mathematical Physics
- Statistical and Nonlinear Physics
language:
- iso: eng
page: 917-941
publication: Communications in Mathematical Physics
publication_identifier:
  issn:
  - 0010-3616
  - 1432-0916
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: Pollicott-Ruelle Resonant States and Betti Numbers
type: journal_article
user_id: '49178'
volume: 378
year: '2020'
...
---
_id: '53415'
abstract:
- lang: eng
  text: "<jats:title>Abstract</jats:title><jats:p>Given a closed orientable hyperbolic
    manifold of dimension <jats:inline-formula><jats:alternatives><jats:tex-math>$$\\ne
    3$$</jats:tex-math><mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\">\r\n
    \                 <mml:mrow>\r\n                    <mml:mo>≠</mml:mo>\r\n                    <mml:mn>3</mml:mn>\r\n
    \                 </mml:mrow>\r\n                </mml:math></jats:alternatives></jats:inline-formula>
    we prove that the multiplicity of the Pollicott-Ruelle resonance of the geodesic
    flow on perpendicular one-forms at zero agrees with the first Betti number of
    the manifold. Additionally, we prove that this equality is stable under small
    perturbations of the Riemannian metric and simultaneous small perturbations of
    the geodesic vector field within the class of contact vector fields. For more
    general perturbations we get bounds on the multiplicity of the resonance zero
    on all one-forms in terms of the first and zeroth Betti numbers. Furthermore,
    we identify for hyperbolic manifolds further resonance spaces whose multiplicities
    are given by higher Betti numbers.\r\n</jats:p>"
author:
- first_name: Benjamin
  full_name: Küster, Benjamin
  last_name: Küster
- first_name: Tobias
  full_name: Weich, Tobias
  id: '49178'
  last_name: Weich
  orcid: 0000-0002-9648-6919
citation:
  ama: Küster B, Weich T. Pollicott-Ruelle Resonant States and Betti Numbers. <i>Communications
    in Mathematical Physics</i>. 2020;378(2):917-941. doi:<a href="https://doi.org/10.1007/s00220-020-03793-2">10.1007/s00220-020-03793-2</a>
  apa: Küster, B., &#38; Weich, T. (2020). Pollicott-Ruelle Resonant States and Betti
    Numbers. <i>Communications in Mathematical Physics</i>, <i>378</i>(2), 917–941.
    <a href="https://doi.org/10.1007/s00220-020-03793-2">https://doi.org/10.1007/s00220-020-03793-2</a>
  bibtex: '@article{Küster_Weich_2020, title={Pollicott-Ruelle Resonant States and
    Betti Numbers}, volume={378}, DOI={<a href="https://doi.org/10.1007/s00220-020-03793-2">10.1007/s00220-020-03793-2</a>},
    number={2}, journal={Communications in Mathematical Physics}, publisher={Springer
    Science and Business Media LLC}, author={Küster, Benjamin and Weich, Tobias},
    year={2020}, pages={917–941} }'
  chicago: 'Küster, Benjamin, and Tobias Weich. “Pollicott-Ruelle Resonant States
    and Betti Numbers.” <i>Communications in Mathematical Physics</i> 378, no. 2 (2020):
    917–41. <a href="https://doi.org/10.1007/s00220-020-03793-2">https://doi.org/10.1007/s00220-020-03793-2</a>.'
  ieee: 'B. Küster and T. Weich, “Pollicott-Ruelle Resonant States and Betti Numbers,”
    <i>Communications in Mathematical Physics</i>, vol. 378, no. 2, pp. 917–941, 2020,
    doi: <a href="https://doi.org/10.1007/s00220-020-03793-2">10.1007/s00220-020-03793-2</a>.'
  mla: Küster, Benjamin, and Tobias Weich. “Pollicott-Ruelle Resonant States and Betti
    Numbers.” <i>Communications in Mathematical Physics</i>, vol. 378, no. 2, Springer
    Science and Business Media LLC, 2020, pp. 917–41, doi:<a href="https://doi.org/10.1007/s00220-020-03793-2">10.1007/s00220-020-03793-2</a>.
  short: B. Küster, T. Weich, Communications in Mathematical Physics 378 (2020) 917–941.
date_created: 2024-04-11T12:33:03Z
date_updated: 2024-04-11T12:36:53Z
department:
- _id: '548'
doi: 10.1007/s00220-020-03793-2
intvolume: '       378'
issue: '2'
keyword:
- Mathematical Physics
- Statistical and Nonlinear Physics
language:
- iso: eng
page: 917-941
publication: Communications in Mathematical Physics
publication_identifier:
  issn:
  - 0010-3616
  - 1432-0916
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: Pollicott-Ruelle Resonant States and Betti Numbers
type: journal_article
user_id: '70575'
volume: 378
year: '2020'
...
---
_id: '63354'
author:
- first_name: Philippe
  full_name: Souplet, Philippe
  last_name: Souplet
- first_name: Michael
  full_name: Winkler, Michael
  id: '31496'
  last_name: Winkler
citation:
  ama: Souplet P, Winkler M. Blow-up Profiles for the Parabolic–Elliptic Keller–Segel
    System in Dimensions                                                         
             $${n\geq 3}$$                                                       
                        n                      ≥                      3. <i>Communications
    in Mathematical Physics</i>. 2018;367(2):665-681. doi:<a href="https://doi.org/10.1007/s00220-018-3238-1">10.1007/s00220-018-3238-1</a>
  apa: Souplet, P., &#38; Winkler, M. (2018). Blow-up Profiles for the Parabolic–Elliptic
    Keller–Segel System in Dimensions                                             
                         $${n\geq 3}$$                                           
                                    n                      ≥                     
    3. <i>Communications in Mathematical Physics</i>, <i>367</i>(2), 665–681. <a href="https://doi.org/10.1007/s00220-018-3238-1">https://doi.org/10.1007/s00220-018-3238-1</a>
  bibtex: '@article{Souplet_Winkler_2018, title={Blow-up Profiles for the Parabolic–Elliptic
    Keller–Segel System in Dimensions                                             
                         $${n\geq 3}$$                                           
                                    n                      ≥                     
    3}, volume={367}, DOI={<a href="https://doi.org/10.1007/s00220-018-3238-1">10.1007/s00220-018-3238-1</a>},
    number={2}, journal={Communications in Mathematical Physics}, publisher={Springer
    Science and Business Media LLC}, author={Souplet, Philippe and Winkler, Michael},
    year={2018}, pages={665–681} }'
  chicago: 'Souplet, Philippe, and Michael Winkler. “Blow-up Profiles for the Parabolic–Elliptic
    Keller–Segel System in Dimensions                                             
                         $${n\geq 3}$$                                           
                                    n                      ≥                     
    3.” <i>Communications in Mathematical Physics</i> 367, no. 2 (2018): 665–81. <a
    href="https://doi.org/10.1007/s00220-018-3238-1">https://doi.org/10.1007/s00220-018-3238-1</a>.'
  ieee: 'P. Souplet and M. Winkler, “Blow-up Profiles for the Parabolic–Elliptic Keller–Segel
    System in Dimensions                                                         
             $${n\geq 3}$$                                                       
                        n                      ≥                      3,” <i>Communications
    in Mathematical Physics</i>, vol. 367, no. 2, pp. 665–681, 2018, doi: <a href="https://doi.org/10.1007/s00220-018-3238-1">10.1007/s00220-018-3238-1</a>.'
  mla: Souplet, Philippe, and Michael Winkler. “Blow-up Profiles for the Parabolic–Elliptic
    Keller–Segel System in Dimensions                                             
                         $${n\geq 3}$$                                           
                                    n                      ≥                     
    3.” <i>Communications in Mathematical Physics</i>, vol. 367, no. 2, Springer Science
    and Business Media LLC, 2018, pp. 665–81, doi:<a href="https://doi.org/10.1007/s00220-018-3238-1">10.1007/s00220-018-3238-1</a>.
  short: P. Souplet, M. Winkler, Communications in Mathematical Physics 367 (2018)
    665–681.
date_created: 2025-12-19T10:52:55Z
date_updated: 2025-12-19T10:53:03Z
doi: 10.1007/s00220-018-3238-1
intvolume: '       367'
issue: '2'
language:
- iso: eng
page: 665-681
publication: Communications in Mathematical Physics
publication_identifier:
  issn:
  - 0010-3616
  - 1432-0916
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: Blow-up Profiles for the Parabolic–Elliptic Keller–Segel System in Dimensions                                                                   $${n\geq
  3}$$                                                                            n                      ≥                      3
type: journal_article
user_id: '31496'
volume: 367
year: '2018'
...
---
_id: '31268'
author:
- first_name: Frédéric
  full_name: Faure, Frédéric
  last_name: Faure
- first_name: Tobias
  full_name: Weich, Tobias
  id: '49178'
  last_name: Weich
  orcid: 0000-0002-9648-6919
citation:
  ama: Faure F, Weich T. Global Normal Form and Asymptotic Spectral Gap for Open Partially
    Expanding Maps. <i>Communications in Mathematical Physics</i>. 2017;356(3):755-822.
    doi:<a href="https://doi.org/10.1007/s00220-017-3000-0">10.1007/s00220-017-3000-0</a>
  apa: Faure, F., &#38; Weich, T. (2017). Global Normal Form and Asymptotic Spectral
    Gap for Open Partially Expanding Maps. <i>Communications in Mathematical Physics</i>,
    <i>356</i>(3), 755–822. <a href="https://doi.org/10.1007/s00220-017-3000-0">https://doi.org/10.1007/s00220-017-3000-0</a>
  bibtex: '@article{Faure_Weich_2017, title={Global Normal Form and Asymptotic Spectral
    Gap for Open Partially Expanding Maps}, volume={356}, DOI={<a href="https://doi.org/10.1007/s00220-017-3000-0">10.1007/s00220-017-3000-0</a>},
    number={3}, journal={Communications in Mathematical Physics}, publisher={Springer
    Science and Business Media LLC}, author={Faure, Frédéric and Weich, Tobias}, year={2017},
    pages={755–822} }'
  chicago: 'Faure, Frédéric, and Tobias Weich. “Global Normal Form and Asymptotic
    Spectral Gap for Open Partially Expanding Maps.” <i>Communications in Mathematical
    Physics</i> 356, no. 3 (2017): 755–822. <a href="https://doi.org/10.1007/s00220-017-3000-0">https://doi.org/10.1007/s00220-017-3000-0</a>.'
  ieee: 'F. Faure and T. Weich, “Global Normal Form and Asymptotic Spectral Gap for
    Open Partially Expanding Maps,” <i>Communications in Mathematical Physics</i>,
    vol. 356, no. 3, pp. 755–822, 2017, doi: <a href="https://doi.org/10.1007/s00220-017-3000-0">10.1007/s00220-017-3000-0</a>.'
  mla: Faure, Frédéric, and Tobias Weich. “Global Normal Form and Asymptotic Spectral
    Gap for Open Partially Expanding Maps.” <i>Communications in Mathematical Physics</i>,
    vol. 356, no. 3, Springer Science and Business Media LLC, 2017, pp. 755–822, doi:<a
    href="https://doi.org/10.1007/s00220-017-3000-0">10.1007/s00220-017-3000-0</a>.
  short: F. Faure, T. Weich, Communications in Mathematical Physics 356 (2017) 755–822.
date_created: 2022-05-17T12:11:13Z
date_updated: 2022-05-19T10:14:36Z
department:
- _id: '10'
- _id: '623'
- _id: '548'
doi: 10.1007/s00220-017-3000-0
external_id:
  arxiv:
  - '1504.06728'
intvolume: '       356'
issue: '3'
keyword:
- Mathematical Physics
- Statistical and Nonlinear Physics
language:
- iso: eng
page: 755-822
publication: Communications in Mathematical Physics
publication_identifier:
  issn:
  - 0010-3616
  - 1432-0916
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: Global Normal Form and Asymptotic Spectral Gap for Open Partially Expanding
  Maps
type: journal_article
user_id: '49178'
volume: 356
year: '2017'
...
---
_id: '31293'
author:
- first_name: Tobias
  full_name: Weich, Tobias
  id: '49178'
  last_name: Weich
  orcid: 0000-0002-9648-6919
citation:
  ama: Weich T. Resonance Chains and Geometric Limits on Schottky Surfaces. <i>Communications
    in Mathematical Physics</i>. 2015;337(2):727-765. doi:<a href="https://doi.org/10.1007/s00220-015-2359-z">10.1007/s00220-015-2359-z</a>
  apa: Weich, T. (2015). Resonance Chains and Geometric Limits on Schottky Surfaces.
    <i>Communications in Mathematical Physics</i>, <i>337</i>(2), 727–765. <a href="https://doi.org/10.1007/s00220-015-2359-z">https://doi.org/10.1007/s00220-015-2359-z</a>
  bibtex: '@article{Weich_2015, title={Resonance Chains and Geometric Limits on Schottky
    Surfaces}, volume={337}, DOI={<a href="https://doi.org/10.1007/s00220-015-2359-z">10.1007/s00220-015-2359-z</a>},
    number={2}, journal={Communications in Mathematical Physics}, publisher={Springer
    Science and Business Media LLC}, author={Weich, Tobias}, year={2015}, pages={727–765}
    }'
  chicago: 'Weich, Tobias. “Resonance Chains and Geometric Limits on Schottky Surfaces.”
    <i>Communications in Mathematical Physics</i> 337, no. 2 (2015): 727–65. <a href="https://doi.org/10.1007/s00220-015-2359-z">https://doi.org/10.1007/s00220-015-2359-z</a>.'
  ieee: 'T. Weich, “Resonance Chains and Geometric Limits on Schottky Surfaces,” <i>Communications
    in Mathematical Physics</i>, vol. 337, no. 2, pp. 727–765, 2015, doi: <a href="https://doi.org/10.1007/s00220-015-2359-z">10.1007/s00220-015-2359-z</a>.'
  mla: Weich, Tobias. “Resonance Chains and Geometric Limits on Schottky Surfaces.”
    <i>Communications in Mathematical Physics</i>, vol. 337, no. 2, Springer Science
    and Business Media LLC, 2015, pp. 727–65, doi:<a href="https://doi.org/10.1007/s00220-015-2359-z">10.1007/s00220-015-2359-z</a>.
  short: T. Weich, Communications in Mathematical Physics 337 (2015) 727–765.
date_created: 2022-05-17T12:56:21Z
date_updated: 2022-05-19T10:16:21Z
department:
- _id: '10'
- _id: '623'
- _id: '548'
doi: 10.1007/s00220-015-2359-z
external_id:
  arxiv:
  - '1403.7419 '
intvolume: '       337'
issue: '2'
keyword:
- Mathematical Physics
- Statistical and Nonlinear Physics
language:
- iso: eng
page: 727-765
publication: Communications in Mathematical Physics
publication_identifier:
  issn:
  - 0010-3616
  - 1432-0916
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: Resonance Chains and Geometric Limits on Schottky Surfaces
type: journal_article
user_id: '49178'
volume: 337
year: '2015'
...
---
_id: '54821'
author:
- first_name: Margit
  full_name: Rösler, Margit
  id: '37390'
  last_name: Rösler
citation:
  ama: Rösler M. Generalized Hermite Polynomials and the Heat Equation for Dunkl Operators.
    <i>Communications in Mathematical Physics</i>. 1998;192(3):519-542. doi:<a href="https://doi.org/10.1007/s002200050307">10.1007/s002200050307</a>
  apa: Rösler, M. (1998). Generalized Hermite Polynomials and the Heat Equation for
    Dunkl Operators. <i>Communications in Mathematical Physics</i>, <i>192</i>(3),
    519–542. <a href="https://doi.org/10.1007/s002200050307">https://doi.org/10.1007/s002200050307</a>
  bibtex: '@article{Rösler_1998, title={Generalized Hermite Polynomials and the Heat
    Equation for Dunkl Operators}, volume={192}, DOI={<a href="https://doi.org/10.1007/s002200050307">10.1007/s002200050307</a>},
    number={3}, journal={Communications in Mathematical Physics}, publisher={Springer
    Science and Business Media LLC}, author={Rösler, Margit}, year={1998}, pages={519–542}
    }'
  chicago: 'Rösler, Margit. “Generalized Hermite Polynomials and the Heat Equation
    for Dunkl Operators.” <i>Communications in Mathematical Physics</i> 192, no. 3
    (1998): 519–42. <a href="https://doi.org/10.1007/s002200050307">https://doi.org/10.1007/s002200050307</a>.'
  ieee: 'M. Rösler, “Generalized Hermite Polynomials and the Heat Equation for Dunkl
    Operators,” <i>Communications in Mathematical Physics</i>, vol. 192, no. 3, pp.
    519–542, 1998, doi: <a href="https://doi.org/10.1007/s002200050307">10.1007/s002200050307</a>.'
  mla: Rösler, Margit. “Generalized Hermite Polynomials and the Heat Equation for
    Dunkl Operators.” <i>Communications in Mathematical Physics</i>, vol. 192, no.
    3, Springer Science and Business Media LLC, 1998, pp. 519–42, doi:<a href="https://doi.org/10.1007/s002200050307">10.1007/s002200050307</a>.
  short: M. Rösler, Communications in Mathematical Physics 192 (1998) 519–542.
date_created: 2024-06-19T08:53:38Z
date_updated: 2024-07-09T09:09:25Z
doi: 10.1007/s002200050307
intvolume: '       192'
issue: '3'
language:
- iso: eng
page: 519-542
publication: Communications in Mathematical Physics
publication_identifier:
  issn:
  - 0010-3616
  - 1432-0916
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: Generalized Hermite Polynomials and the Heat Equation for Dunkl Operators
type: journal_article
user_id: '82981'
volume: 192
year: '1998'
...
