{
  "id": "1002.4748",
  "version": "v1",
  "published": "2010-02-25T16:04:24.000Z",
  "updated": "2010-02-25T16:04:24.000Z",
  "title": "First-Principles Study of a Positron Immersed in an Electron Gas",
  "authors": [
    "N. D. Drummond",
    "P. Lopez Rios",
    "C. J. Pickard",
    "R. J. Needs"
  ],
  "journal": "Phys. Rev. B 82, 035107 (2010)",
  "doi": "10.1103/PhysRevB.82.035107",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.quant-gas"
  ],
  "abstract": "Calculations of the relaxation energy, contact pair-correlation function, and annihilating-pair momentum density for a single positron immersed in a homogeneous electron gas are presented. We achieve an accurate description of the electron-positron correlation effects by working in the reference frame in which the positron is stationary and using a mean-field approach based on single-component density functional theory. Our positron relaxation energies and annihilation rates are similar to those from the best existing many-body calculations. Our annihilating-pair momentum densities are significantly different from previous data, and include a \"tail\" beyond the Fermi edge.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2010-02-25T16:04:24.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "78.70.Bj",
      "71.10.Ca",
      "71.15.Mb",
      "71.60.+z"
    ],
    "keywords": [
      "electron gas",
      "first-principles study",
      "annihilating-pair momentum density",
      "relaxation energy"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2010,
      "month": "Jul",
      "volume": 82,
      "number": 3,
      "pages": "035107"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2010PhRvB..82c5107D"
    }
  }
}