{
  "id": "astro-ph/0205079",
  "version": "v1",
  "published": "2002-05-06T15:40:53.000Z",
  "updated": "2002-05-06T15:40:53.000Z",
  "title": "Varying $α$ in the early universe: CMB, LSS and FMA",
  "authors": [
    "C. J. A. P. Martins"
  ],
  "comment": "4 pages, uses moriond.sty, contribution to Moriond 2002 cosmology meeting at Les Arcs, France (March 16-23, 2002), to appear in the Proceedings",
  "categories": [
    "astro-ph",
    "gr-qc",
    "hep-ph",
    "hep-th"
  ],
  "abstract": "I review recent constraints on and claimed detections of a time-varying fine-structure constant $\\alpha$, and discuss our own work, particularly on the effects of $\\alpha$ in the cosmic microwave background and large-scale structure. Our results are consistent with no variation in $\\alpha$ from the epoch of recombination to the present day, and restrict any such variation to be less than about 4%. The forthcoming MAP and Planck experiments will be able to break most of the currently existing degeneracies between $\\alpha$ and other parameters, and measure $\\alpha$ to better than percent accuracy.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2002-05-06T15:40:53.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "early universe",
      "cosmic microwave background",
      "time-varying fine-structure constant",
      "large-scale structure",
      "planck experiments"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 586422,
      "adsabs": "2002astro.ph..5079M"
    }
  }
}