{
  "id": "1406.3342",
  "version": "v2",
  "published": "2014-06-12T18:45:37.000Z",
  "updated": "2015-01-08T22:15:24.000Z",
  "title": "Large tensor-to-scalar ratio and running of the scalar spectral index with Instep Inflation",
  "authors": [
    "Guillermo Ballesteros",
    "J. Alberto Casas"
  ],
  "comment": "16 pages, 2 figures, to appear in Physical Review D",
  "categories": [
    "astro-ph.CO",
    "gr-qc",
    "hep-ph",
    "hep-th"
  ],
  "abstract": "If a sizeable tensor-to-scalar ratio ~0.1 turns out to be detected and a negative running of the scalar spectral index ~0.01 is significantly required by the data, the vast majority of single field models of inflation will be ruled out. We show that a flat tree-level effective potential, lifted by radiative corrections and by the imprints of a high energy scale (in the form of non-renormalizable operators) can explain those features and produce enough inflation in the slow-roll regime.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2014-06-12T18:45:37.000Z",
      "comment": "1+15 pages, 2 figures",
      "journal": null,
      "doi": null
    },
    {
      "version": "v2",
      "updated": "2015-01-08T22:15:24.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "98.80.Cq",
      "98.80.-k"
    ],
    "keywords": [
      "scalar spectral index",
      "large tensor-to-scalar ratio",
      "instep inflation",
      "high energy scale",
      "flat tree-level effective potential"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1103/PhysRevD.91.043502",
      "journal": "Physical Review D",
      "year": 2015,
      "month": "Feb",
      "volume": 91,
      "number": 4,
      "pages": "043502"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 16,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1300518,
      "adsabs": "2015PhRvD..91d3502B"
    }
  }
}