{
  "id": "2103.08960",
  "version": "v1",
  "published": "2021-03-16T10:39:09.000Z",
  "updated": "2021-03-16T10:39:09.000Z",
  "title": "On the Electromagnetic Response of Topological Superconductors",
  "authors": [
    "Marcus Stålhammar",
    "Michael Stone",
    "Masatoshi Sato",
    "Thors Hans Hansson"
  ],
  "comment": "8+8 pages, 2 figures",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We resolve several puzzles related to the electromagnetic response of topological superconductors in 3+1 dimensions. In particular we show by an analytical calculation that the interface between a topological and normal superconductor does not exhibit any quantum Hall effect as long as time reversal invariance is preserved. We contrast this with the analogous case of a topological insulator to normal insulator interface. The difference is that in the topological insulator the electromagnetic vector potential couples to a vector current in a theory with a Dirac mass, while in the superconductor a pair of Weyl fermions are gapped by Majorana masses and the electromagnetic vector potential couples to their axial currents.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2021-03-16T10:39:09.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "electromagnetic response",
      "topological superconductors",
      "electromagnetic vector potential couples",
      "time reversal invariance",
      "quantum hall effect"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 8,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}