{
  "id": "2002.09374",
  "version": "v1",
  "published": "2020-02-21T16:02:06.000Z",
  "updated": "2020-02-21T16:02:06.000Z",
  "title": "Topological chiral interface states beyond insulators",
  "authors": [
    "Lavi K. Upreti",
    "P. Delplace"
  ],
  "comment": "8 pages,9 figs",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.other"
  ],
  "abstract": "We show how to engineer a chiral spectral flow of interface states in a gapless system. Although the bulk bands touch -- thus making the topological indices of the bands ill-defined -- this spectral flow has a topological origin that makes it robust even when it coexists with the bulk bands. This phenomenon is illustrated with an adiabatically modulated photonic quantum walk.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2020-02-21T16:02:06.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "topological chiral interface states",
      "insulators",
      "adiabatically modulated photonic quantum walk",
      "bulk bands touch",
      "chiral spectral flow"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 8,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}