{
  "id": "2310.11126",
  "version": "v1",
  "published": "2023-10-17T10:20:09.000Z",
  "updated": "2023-10-17T10:20:09.000Z",
  "title": "One-loop effective action of the IKKT model for cosmological backgrounds",
  "authors": [
    "Emmanuele Battista",
    "Harold C. Steinacker"
  ],
  "comment": "33 pages, 2 figures",
  "categories": [
    "hep-th"
  ],
  "abstract": "We study cosmological solutions of the IKKT model with $k=-1$ FLWR geometry, taking into account one-loop corrections. A previously discussed covariant quantum spacetime is found to be stabilized through one-loop effects at early times, without adding a mass term to the model. At late times, this background is modified and goes through a period of acceleration, before settling down to a coasting FLRW geometry with scale parameter $a(t) \\sim t$. This is qualitatively close to observation without any fine-tuning, irrespective of the detailed matter content of the universe.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2023-10-17T10:20:09.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "one-loop effective action",
      "ikkt model",
      "cosmological backgrounds",
      "account one-loop corrections",
      "covariant quantum spacetime"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 33,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}