{
  "id": "nucl-th/0202005",
  "version": "v3",
  "published": "2002-02-01T12:45:25.000Z",
  "updated": "2002-07-17T17:07:55.000Z",
  "title": "Chiral dynamics of nuclear matter at finite temperature",
  "authors": [
    "S. Fritsch",
    "N. Kaiser",
    "W. Weise"
  ],
  "comment": "10 pages, 4 figures, submitted to Physics Letters B",
  "journal": "Phys.Lett. B545 (2002) 73-81",
  "doi": "10.1016/S0370-2693(02)02559-5",
  "categories": [
    "nucl-th"
  ],
  "abstract": "We extend a recent three-loop calculation of nuclear matter in the systematic framework of chiral perturbation theory to finite temperatures T. The contributions from one- and two-pion exchange diagrams which cause nuclear binding and saturation at T=0 are included for T>0 in the density and temperature dependent free energy per particle, $\\bar F(rho,T)$. The so-called anomalous 2pi-exchange contribution $\\bar A(rho,T)$ (with no counterpart in the ground state energy density at T=0) is consistently included. The calculated pressure isotherms display the familiar first-order liquid-gas phase transition of isospin symmetric nuclear matter with a critical point at T_c = 25.5 MeV and rho_c = 0.09 fm^{-3}. The too high value of the critical temperature originates from the strong momentum dependence of the underlying single-particle potential U(p,k_{f0}) near the Fermi-surface. We also consider pure neutron matter at T>0 in the same framework and find fair agreement with sophisticated many-body calculations for neutron densities rho_n < 0.2 fm^{-3}.",
  "revisions": [
    {
      "version": "v3",
      "updated": "2002-07-17T17:07:55.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "12.38.Bx",
      "21.65.+f"
    ],
    "keywords": [
      "finite temperature",
      "chiral dynamics",
      "familiar first-order liquid-gas phase transition",
      "temperature dependent free energy",
      "ground state energy density"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 10,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 582513
    }
  }
}