{
  "id": "1106.4539",
  "version": "v1",
  "published": "2011-06-22T19:41:59.000Z",
  "updated": "2011-06-22T19:41:59.000Z",
  "title": "The two-nucleon electromagnetic charge operator in chiral effective field theory ($χ$EFT) up to one loop",
  "authors": [
    "S. Pastore",
    "L. Girlanda",
    "R. Schiavilla",
    "M. Viviani"
  ],
  "comment": "16 pages, 10 figures",
  "journal": "Phys.Rev.C84:024001,2011",
  "doi": "10.1103/PhysRevC.84.024001",
  "categories": [
    "nucl-th"
  ],
  "abstract": "The electromagnetic charge operator in a two-nucleon system is derived in chiral effective field theory ($\\chi$EFT) up to order $e\\, Q$ (or N4LO), where $Q$ denotes the low-momentum scale and $e$ is the electric charge. The specific form of the N3LO and N4LO corrections from, respectively, one-pion-exchange and two-pion-exchange depends on the off-the-energy-shell prescriptions adopted for the non-static terms in the corresponding potentials. We show that different prescriptions lead to unitarily equivalent potentials and accompanying charge operators. Thus, provided a consistent set is adopted, predictions for physical observables will remain unaffected by the non-uniqueness associated with these off-the-energy-shell effects.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2011-06-22T19:41:59.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "21.30.-x",
      "12.39.Fe",
      "21.45.Bc",
      "13.40.-f"
    ],
    "keywords": [
      "chiral effective field theory",
      "two-nucleon electromagnetic charge operator",
      "two-nucleon system",
      "off-the-energy-shell effects",
      "consistent set"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review C",
      "year": 2011,
      "month": "Aug",
      "volume": 84,
      "number": 2,
      "pages": "024001"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 16,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 914477,
      "adsabs": "2011PhRvC..84b4001P"
    }
  }
}