{
  "id": "nucl-th/0202076",
  "version": "v1",
  "published": "2002-02-26T10:42:58.000Z",
  "updated": "2002-02-26T10:42:58.000Z",
  "title": "Interplay of Three-Body Interactions in the EOS of Nuclear Matter",
  "authors": [
    "W. Zuo",
    "A. Lejeune",
    "U. Lombardo",
    "J. F. Mathiot"
  ],
  "comment": "12 pages 7 figures",
  "journal": "Nucl.Phys. A706 (2002) 418-430",
  "doi": "10.1016/S0375-9474(02)00750-9",
  "categories": [
    "nucl-th"
  ],
  "abstract": "The equation of state of symmetric nuclear matter has been investigated within Brueckner approach adopting the charge-dependent Argonne $V_{18}$ two-body force plus a microscopic three-body force based on a meson-exchange model. The effects on the equation of state of the individual processes giving rise to the three-body force are explored up to high baryonic density. It is found that the major role is played by the competition between the strongly repulsive $(\\sigma, \\omega)$ exchange term with virtual nucleon-antinucleon excitation and the large attractive contribution due to $(\\sigma, \\omega)$ exchange with $N^*(1440)$ resonance excitation. The net result is a repulsive term which shifts the saturation density corresponding to the only two-body force much closer to the empirical value, while keeping constant the saturation energy per particle. The contribution from $(\\pi, \\rho)$ exchange 3BF is shown to be attractive and rather small. The analysis of the separate three-body force contributions allows to make a comparison with the prediction of Dirac-Brueckner approach which is supposed to incorporate via the {\\it dressed} Dirac spinors the same virtual nucleon-antinucleon excitations as in the present three-body force. The numerical results suggest that the three-body force components missing from the Dirac-Brueckner approach are not negligible, especially at high density. The calculation of the nuclear mean field and the effective mass shows that the three-body force affects to a limited extent such properties.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2002-02-26T10:42:58.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "25.70.-z",
      "13.75.Cs",
      "21.65.+f",
      "24.10.Cn"
    ],
    "keywords": [
      "three-body interactions",
      "virtual nucleon-antinucleon excitation",
      "separate three-body force contributions",
      "dirac-brueckner approach",
      "two-body force plus"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "Elsevier",
      "journal": "Nucl. Phys. A"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 12,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 583412
    }
  }
}