{
  "id": "1406.5322",
  "version": "v1",
  "published": "2014-06-20T09:00:30.000Z",
  "updated": "2014-06-20T09:00:30.000Z",
  "title": "Transport coefficients of heavy quarks around $T_c$ at finite quark chemical potential",
  "authors": [
    "H. Berrehrah",
    "P. B. Gossiaux",
    "J. Aichelin",
    "W. Cassing",
    "J. M. Torres-Rincon",
    "E. Bratkovskaya"
  ],
  "comment": "4 pages, 4 figures",
  "categories": [
    "hep-ph",
    "nucl-th"
  ],
  "abstract": "The interactions of heavy quarks with the partonic environment at finite temperature $T$ and finite quark chemical potential $\\mu_q$ are investigated in terms of transport coefficients within the Dynamical Quasi-Particle model (DQPM) designed to reproduce the lattice-QCD results (including the partonic equation of state) in thermodynamic equilibrium. These results are confronted with those of nuclear many-body calculations close to the critical temperature $T_c$. The hadronic and partonic spatial diffusion coefficients join smoothly and show a pronounced minimum around $T_c$, at $\\mu_q=0$ as well as at finite $\\mu_q$. Close and above $T_c$ its absolute value matches the lQCD calculations for $\\mu_q=0$. The smooth transition of the heavy quark transport coefficients from the hadronic to the partonic medium corresponds to a cross over in line with lattice calculations, and differs substantially from perturbative QCD (pQCD) calculations which show a large discontinuity at $T_c$. This indicates that in the vicinity of $T_c$ dynamically dressed massive partons and not massless pQCD partons are the effective degrees-of-freedom in the quark-gluon plasma.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2014-06-20T09:00:30.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "25.75.Nq",
      "24.10.Lx",
      "24.10.Jv"
    ],
    "keywords": [
      "finite quark chemical potential",
      "transport coefficients",
      "heavy quark",
      "partonic spatial diffusion coefficients join"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1103/PhysRevC.90.051901",
      "journal": "Physical Review C",
      "year": 2014,
      "month": "Nov",
      "volume": 90,
      "number": 5,
      "pages": "051901"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1301865,
      "adsabs": "2014PhRvC..90e1901B"
    }
  }
}