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

ORAL · N19 · ID: 1067182

Presentations

  • Phononic real Chern insulator with protected corner modes in graphynes

    ORAL

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    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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  • Polarization and corner charge in Chern insulators

    ORAL

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    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

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    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

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    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

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    Publication: (1) Part I: Staggered index and 3D winding number of Kramers-degenerate bands, A. Tyner and P. Goswami, arXiv:2109.06871v2<br><br>(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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  • (Co)irrep invisible topology of perfectly flat bands

    ORAL

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    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

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    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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  • Quantized bulk conductivity as a local Chern marker

    ORAL

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    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

    View abstract →