{
  "id": "1406.0807",
  "version": "v1",
  "published": "2014-06-03T18:21:09.000Z",
  "updated": "2014-06-03T18:21:09.000Z",
  "title": "Remnants, Fuzzballs or Wormholes?",
  "authors": [
    "Samir D. Mathur"
  ],
  "comment": "7 pages, 4 figures (Essay awarded an honorable mention in the Gravity Research Foundation essay competition 2014)",
  "categories": [
    "hep-th",
    "gr-qc"
  ],
  "abstract": "The black hole information paradox has caused enormous confusion over four decades. But in recent years, the theorem of quantum strong-subaddditivity has sorted out the possible resolutions into three sharp categories: (A) No new physics at $r\\gg l_p$; this necessarily implies remnants/information loss. A realization of remnants is given by a baby Universe attached near $r\\sim 0$. (B) Violation of the `no-hair' theorem by nontrivial effects at the horizon $r\\sim M$. This possibility is realized by fuzzballs in string theory, and gives unitary evaporation. (C) Having the vacuum at the horizon, but requiring that Hawking quanta at $r\\sim M^3$ be somehow identified with degrees of freedom inside the black hole. A model for this `extreme nonlocality' is realized by conjecturing that wormholes connect the radiation quanta to the hole.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2014-06-03T18:21:09.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "04.70.-s"
    ],
    "keywords": [
      "black hole information paradox",
      "necessarily implies remnants/information loss",
      "extreme nonlocality",
      "freedom inside",
      "unitary evaporation"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1142/S0218271814420243",
      "journal": "International Journal of Modern Physics D",
      "year": 2014,
      "month": "Nov",
      "volume": 23,
      "number": 12,
      "pages": 1442024
    },
    "note": {
      "typesetting": "TeX",
      "pages": 7,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1298977,
      "adsabs": "2014IJMPD..2342024M"
    }
  }
}