Theoretical Developments in Topological States: Multipole Moments, Flat Bands, Local Markers, and Beyond

Presentations

• Phononic real Chern insulator with protected corner modes in graphynes

  ORAL

  March 8, 2023, 2:30 PM – March 8, 2023, 2:42 PM

  Publication: Zhu J, Wu W, Zhao J, et al. Phononic real Chern insulator with protected corner modes in graphynes[J]. Physical Review B, 2022, 105(8): 085123.

  Presenters

  • Jiaojiao Zhu

    Singapore University of Technology and Design

  Authors

  • Jiaojiao Zhu

    Singapore University of Technology and Design

  • Shengyuan A Yang

    Singapore University of Technology and Design, University of Texas at Austin

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• Time-Reversal Soliton Pair in Two-Dimensional Topological Insulating Systems

  ORAL

  March 8, 2023, 2:42 PM – March 8, 2023, 2:54 PM

  Presenters

  • Yi-Chun Hung

    Northeastern University

  Authors

  • Yi-Chun Hung

    Northeastern University

  • Baokai Wang

    Northeastern University

  • Hsin Lin

    Academia Sinica

  • Arun Bansil

    Northeastern University, Northeastern University, Boston, USA

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• Polarization and corner charge in Chern insulators

  ORAL

  March 8, 2023, 2:54 PM – March 8, 2023, 3:06 PM

  Publication: Planned paper: Sachin Vaidya, Mikael C. Rechtsman, Wladimir A. Benalcazar, "Polarization and corner-charge in Chern insulators".

  Presenters

  • Sachin Vaidya

    Pennsylvania State University

  Authors

  • Sachin Vaidya

    Pennsylvania State University

  • Mikael C Rechtsman

    Pennsylvania State University

  • Wladimir A Benalcazar

    Pennsylvania State University

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• Fractional disclination charge and discrete shift in the Hofstadter butterfly

  ORAL

  March 8, 2023, 3:06 PM – March 8, 2023, 3:18 PM

  Publication: https://arxiv.org/abs/2204.05320 (this work)

  Presenters

  • Yuxuan Zhang

    University of Maryland College Park, University of Maryland, College Park

  Authors

  • Yuxuan Zhang

    University of Maryland College Park, University of Maryland, College Park

  • Naren Manjunath

    University of Maryland College Park

  • Gautam Nambiar

    University of Maryland, College Park

  • Maissam Barkeshli

    Joint Quantum Institute, NIST/University of Maryland, College Park, University of Maryland College Park, University of Maryland, College Park

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• Quantized charge polarization as a many-body invariant in (2+1)D crystalline topological states and Hofstadter butterflies

  ORAL

  March 8, 2023, 3:18 PM – March 8, 2023, 3:30 PM

  Publication: "Quantized charge polarization as a many-body invariant in (2+1)D crystalline topological states and Hofstadter butterflies", (to appear)

  Presenters

  • Naren Manjunath

    University of Maryland College Park

  Authors

  • Naren Manjunath

    University of Maryland College Park

  • Maissam Barkeshli

    Joint Quantum Institute, NIST/University of Maryland, College Park, University of Maryland College Park, University of Maryland, College Park

  • Gautam Nambiar

    University of Maryland College Park, University of Maryland

  • Yuxuan Zhang

    University of Maryland College Park, University of Maryland, College Park

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• Witten effect and integer classification of three-dimensional topological insulators

  ORAL

  March 8, 2023, 3:30 PM – March 8, 2023, 3:42 PM

  Publication: (1) Part I: Staggered index and 3D winding number of Kramers-degenerate bands, A. Tyner and P. Goswami, arXiv:2109.06871v2
  
  (2) Part II: Witten effect and Z-classification of axion angle ?=n p, A. Tyner and P. Goswami, arXiv:2206.10636v2

  Presenters

  • Pallab Goswami

    Northwestern University

  Authors

  • Pallab Goswami

    Northwestern University

  • Alexander C Tyner

    Northwestern University

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• Identification of novel spin Hall platforms using magnetic flux tubes

  ORAL

  March 8, 2023, 3:42 PM – March 8, 2023, 3:54 PM

  Publication: arXiv:2209.13582

  Presenters

  • Alexander C Tyner

    Northwestern University

  Authors

  • Alexander C Tyner

    Northwestern University

  • Pallab Goswami

    Northwestern University

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• Topological Triviality of Strictly Local Flat Hamiltonians

  ORAL

  March 8, 2023, 3:54 PM – March 8, 2023, 4:06 PM

  Presenters

  • Pratik Sathe

    University of California, Los Angeles

  Authors

  • Pratik Sathe

    University of California, Los Angeles

  • Rahul Roy

    University of California, Los Angeles

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• Quantum phase transitions in strongly disordered topological insulators

  ORAL

  March 8, 2023, 4:06 PM – March 8, 2023, 4:18 PM

  Presenters

  • Caio H Lewenkopf

    Universidade Federal Fluminense

  Authors

  • Caio H Lewenkopf

    Universidade Federal Fluminense

  • Bryan D Assunção

    Universidade Federal de Uberlândia

  • Gerson J Ferreira

    Universidade Federal de Uberlandia

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• (Co)irrep invisible topology of perfectly flat bands

  ORAL

  March 8, 2023, 4:18 PM – March 8, 2023, 4:30 PM

  Presenters

  • Dumitru Calugaru

    Princeton University

  Authors

  • Dumitru Calugaru

    Princeton University

  • Aaron Chew

    Princeton University

  • Luis Elcoro

    University of the Basque Country, Bilbao, Spain

  • Yuanfeng Xu

    Department of Physics, Princeton University, Princeton University

  • Andrei B Bernevig

    Princeton University

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• Many-body index for quadrupole insulators

  ORAL

  March 8, 2023, 4:30 PM – March 8, 2023, 4:42 PM

  Publication: Yasuhiro Tada and Masaki Oshikawa, to be submitted.

  Presenters

  • Yasuhiro Tada

    Hiroshima University

  Authors

  • Yasuhiro Tada

    Hiroshima University

  • Masaki Oshikawa

    Univ of Tokyo-Kashiwanoha

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• Local topological markers in odd spatial dimensions and their application to amorphous topological matter

  ORAL

  March 8, 2023, 4:42 PM – March 8, 2023, 4:54 PM

  Publication: arXiv:2207.01646

  Presenters

  • Julia D Hannukainen

    KTH Royal Institute of Technology

  Authors

  • Julia D Hannukainen

    KTH Royal Institute of Technology

  • Miguel F Mart?nez

    KTH Royal Institute of Technology

  • Jens H Bardarson

    KTH Royal Institute of Technology

  • Thomas Klein Kvorning

    KTH Roylal Institute of Technology

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• Quantized bulk conductivity as a local Chern marker

  ORAL

  March 8, 2023, 4:54 PM – March 8, 2023, 5:06 PM

  Publication: https://link.aps.org/doi/10.1103/PhysRevB.106.155124

  Presenters

  • Peru d'Ornellas

    Blackett Laboratory

  Authors

  • Peru d'Ornellas

    Blackett Laboratory

  • Derek K Lee

    Imperial College London

  • Ryan Barnett

    Imperial College London

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• Local markers identify topology in metals and gapless systems

  ORAL

  March 8, 2023, 5:06 PM – March 8, 2023, 5:18 PM

  Publication: Physical Review B 106, 064109 (2022)

  Presenters

  • Alexander W Cerjan

    Sandia National Laboratories

  Authors

  • Alexander W Cerjan

    Sandia National Laboratories

  • Terry A Loring

    University of New Mexico

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