{
  "id": "1405.4762",
  "version": "v2",
  "published": "2014-05-19T15:20:44.000Z",
  "updated": "2014-08-22T15:18:58.000Z",
  "title": "Phase structure of three and four flavor QCD",
  "authors": [
    "Christian S. Fischer",
    "Jan Luecker",
    "Christian A. Welzbacher"
  ],
  "comment": "10 pages, 9 figures, v2: typos corrected, minor changes, version accepted by PRD",
  "categories": [
    "hep-ph",
    "hep-lat",
    "nucl-th"
  ],
  "abstract": "We investigate the phase structure of QCD at finite temperature and light-quark chemical potential. We improve upon earlier results for N_f=2+1 dynamical quark flavors and investigate the effects of charm quarks in an extension to N_f=2+1+1. We determine the quark condensate and the Polyakov loop potential using solutions of a coupled set of (truncated) Dyson-Schwinger equations for the quark and gluon propagators of Landau gauge QCD. At zero chemical potential we find excellent agreement with results from lattice-QCD. With input fixed from physical observables we find only a very small influence of the charm quark on the resulting phase diagram at finite chemical potential. We discuss the location of the emerging critical end-point and compare with expectations from lattice gauge theory.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2014-05-19T15:20:44.000Z",
      "abstract": "We investigate the phase structure of QCD at finite temperature and light-quark chemical potential. We improve upon earlier results for N_f=2+1 dynamical quark flavors and investigate the effects of charm quarks in an extension to N_f=2+1+1. We determine the quark condensate and the Polyakov loop potential using solutions of a coupled set of (truncated) Dyson-Schwinger equations for the quark and gluon propagators of Landau gauge QCD. At zero chemical potential we find excellent agreement with results from lattice-QCD. With input fixed from physical observables we find only a very small influence of the charm quark onto the resulting phase diagram at finite chemical potential. We discuss the location of the emerging critical end-point and compare with expectations from lattice gauge theory.",
      "comment": "10 pages, 9 figures",
      "journal": null,
      "doi": null
    },
    {
      "version": "v2",
      "updated": "2014-08-22T15:18:58.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "12.38.Aw",
      "11.10.Wx",
      "12.38.Lg"
    ],
    "keywords": [
      "phase structure",
      "flavor qcd",
      "charm quark",
      "landau gauge qcd",
      "lattice gauge theory"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1103/PhysRevD.90.034022",
      "journal": "Physical Review D",
      "year": 2014,
      "month": "Aug",
      "volume": 90,
      "number": 3,
      "pages": "034022"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 10,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1297062,
      "adsabs": "2014PhRvD..90c4022F"
    }
  }
}