Interface Symmetry-Protected Topological States

ORAL

Abstract

Bosonic Symmetry-Protected Topological (SPT) states are entangled gapped phases of matter fundamentally different than trivial product states. I will discuss a mechanism whereby local interactions give rise to one-dimensional SPT states at the gapped interface between two dimensional systems. I shall approach this interface problem using a one-dimensional Luttinger liquid theory whose instability towards a gapped state is driven by local interactions that respect a set of discrete symmetries responsible for the stable properties of the emergent SPT state. I will discuss the entanglement properties as well as zero mode excitations supported by domain walls along these SPT interfaces.

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Presenters

  • Luiz Santos

    Physics, Univ of Illinois - Urbana, Univ of Illinois - Urbana

Authors

  • Luiz Santos

    Physics, Univ of Illinois - Urbana, Univ of Illinois - Urbana

  • Jennifer Cano

    Princeton Center for Theoretical Science, Princeton University, Princeton Center for Theoretical Science, Physics, Princeton University, Princeton University, Center for Theoretical Science, Princeton University, Physics, Princeton

  • Michael Mulligan

    Physics and Astronomy, Univ of California - Riverside, University of California-Riverside, Physics, University of California Riverside, Physics and Astronomy, University of California - Riverside

  • Taylor Hughes

    University of Illinois Urbana-Champaign, Department of physics, University of Illinois at Urbana-Champaign, Physics, University of Illinois at Urbana-Champaign, Physics, Univ of Illinois - Urbana