{
  "id": "hep-ph/0001108",
  "version": "v4",
  "published": "2000-01-13T06:05:09.000Z",
  "updated": "2000-08-09T06:06:53.000Z",
  "title": "Chiral phase transition at high temperature and density in the QCD-like theory",
  "authors": [
    "O. Kiriyama",
    "M. Maruyama",
    "F. Takagi"
  ],
  "comment": "10 pages, 6 figures. Accepted for publication in Physical Review D",
  "journal": "Phys.Rev. D62 (2000) 105008",
  "doi": "10.1103/PhysRevD.62.105008",
  "categories": [
    "hep-ph"
  ],
  "abstract": "The chiral phase transition at finite temperature T and/or chemical potential $\\mu$ is studied using the QCD-like theory with a variational approach. The ``QCD-like theory'' means the improved ladder approximation with an infrared cutoff in terms of a modified running coupling. The form of Cornwall-Jackiw-Tomboulis effective potential is modified by the use of the Schwinger-Dyson equation for generally nonzero current quark mass. We then calculate the effective potential at finite T and/or $\\mu$ and investigate the phase structure in the chiral limit. We have a second-order phase transition at $T_c=129$ MeV for $\\mu=0$ and a first-order one at $\\mu_c=422$ MeV for T=0. A tricritical point in the T-$\\mu$ plane is found at T=107 MeV, $\\mu=210$ MeV. The position is close to that of the random matrix model and some version of the Nambu-Jona-Lasinio model.",
  "revisions": [
    {
      "version": "v4",
      "updated": "2000-08-09T06:06:53.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "chiral phase transition",
      "qcd-like theory",
      "high temperature",
      "nonzero current quark mass",
      "effective potential"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. D"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 10,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 522987
    }
  }
}