{
  "id": "quant-ph/0401086",
  "version": "v1",
  "published": "2004-01-15T08:41:15.000Z",
  "updated": "2004-01-15T08:41:15.000Z",
  "title": "Gravitational self-localization in quantum measurement",
  "authors": [
    "Tamas Geszti"
  ],
  "comment": "Accepted for publication in Physical Review A; extends and replaces quant-ph/0204036",
  "journal": "Phys.Rev. A69 (2004) 032110",
  "doi": "10.1103/PhysRevA.69.032110",
  "categories": [
    "quant-ph",
    "gr-qc"
  ],
  "abstract": "Within Newton-Schr\\\"odinger quantum mechanics which allows gravitational self-interaction, it is shown that a no-split no-collapse measurement scenario is possible. A macroscopic pointer moves at low acceleration, controlled by the Ehrenfest-averaged force acting on it. That makes classicality self-sustaining, resolves Everett's paradox, and outlines a way to spontaneous emergence of quantum randomness. Numerical estimates indicate that enhanced short-range gravitational forces are needed for the scenario to work. The scheme fails to explain quantum nonlocality, including two-detector anticorrelations, which points towards the need of a nonlocal modification of the Newton-Schr\\\"odinger coupling scheme.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2004-01-15T08:41:15.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "quantum measurement",
      "gravitational self-localization",
      "no-split no-collapse measurement scenario",
      "explain quantum nonlocality",
      "resolves everetts paradox"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. A"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 642879
    }
  }
}