{
  "id": "1212.4907",
  "version": "v4",
  "published": "2012-12-20T02:05:52.000Z",
  "updated": "2013-08-08T09:03:11.000Z",
  "title": "Thermodynamic properties and shear viscosity over entropy density ratio of nuclear fireball in a quantum-molecular dynamics model",
  "authors": [
    "C. L. Zhou",
    "Y. G. Ma",
    "D. Q. Fang",
    "G. Q. Zhang"
  ],
  "comment": "10 pages, 13 figures; Phys. Rev. C (in press) (x-axis of Fig.1 is corrected)",
  "journal": "Phys. Rev. C 88, 024604 (2013)",
  "doi": "10.1103/PhysRevC.88.024604",
  "categories": [
    "nucl-th",
    "nucl-ex"
  ],
  "abstract": "Thermodynamic and transport properties of nuclear fireball created in the central region of heavy-ion collisions below 400 MeV/nucleon are investigated within the isospin-dependent quantum molecular dynamic (IQMD) model. These properties including the density, temperature, chemical potential, entropy density ($s$) and shear viscosity ($\\eta$), are calculated by a generalized hot Thomas Fermi formulism and a parameterized function, which was developed by Danielewicz. As the collision goes on, a transient minimal $\\eta/s=5/4\\pi-10/4\\pi$ occurs in the largest compression stage. Besides, the relationship of $\\eta/s$ to temperature ($T$) in the freeze-out stage displays a local minimum which is about 9-20 times $1/4\\pi$ around $T$ = 8-12 MeV, which can be argued as indicative of a liquid gas phase transition. In addition, the influences of nucleon-nucleon (NN) cross section ($\\sigma_{NN}$) and symmetry energy coefficient ($C_{s}$) are also discussed, and it is found that the results are sensitive to $\\sigma_{NN}$ but not to $C_{s}$.",
  "revisions": [
    {
      "version": "v4",
      "updated": "2013-08-08T09:03:11.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "21.65.Mn",
      "25.70.-z",
      "02.70.Ns",
      "24.10.Lx"
    ],
    "keywords": [
      "entropy density ratio",
      "quantum-molecular dynamics model",
      "nuclear fireball",
      "shear viscosity",
      "hot thomas fermi formulism"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review C",
      "year": 2013,
      "month": "Aug",
      "volume": 88,
      "number": 2,
      "pages": "024604"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 10,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1208369,
      "adsabs": "2013PhRvC..88b4604Z"
    }
  }
}