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Title: Phase structure of the Polyakov-quark-meson model

Abstract

The relation between the deconfinement and chiral phase transition is explored in the framework of a Polyakov-loop-extended two-flavor quark-meson (PQM) model. In this model the Polyakov loop dynamics is represented by a background temporal gauge field which also couples to the quarks. As a novelty an explicit quark chemical potential and N{sub f}-dependence in the Polyakov loop potential is proposed by using renormalization group arguments. The behavior of the Polyakov loop as well as the chiral condensate as function of temperature and quark chemical potential is obtained by minimizing the grand canonical thermodynamic potential of the system. The effect of the Polyakov loop dynamics on the chiral phase diagram and on several thermodynamic bulk quantities is presented.

Authors:
 [1];  [2];  [3];  [4]
  1. Institut fuer Physik, Karl-Franzens-Universitaet Graz, Universitaetsplatz 5, A-8010 Graz (Austria)
  2. Institut fuer Theoretische Physik, Universitaet Heidelberg, Philosophenweg 16, D-69120 Heidelberg (Germany)
  3. Institut fuer Kernphysik, TU Darmstadt, Schlossgartenstr. 9, D-64289 Darmstadt (Germany)
  4. (Germany)
Publication Date:
OSTI Identifier:
21032350
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 76; Journal Issue: 7; Other Information: DOI: 10.1103/PhysRevD.76.074023; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CHIRALITY; FLAVOR MODEL; MESONS; PHASE DIAGRAMS; PHASE TRANSFORMATIONS; POTENTIALS; QUANTUM CHROMODYNAMICS; QUARK CONDENSATION; QUARKS; RENORMALIZATION; TEMPERATURE DEPENDENCE

Citation Formats

Schaefer, B.-J., Pawlowski, J. M., Wambach, J., and Gesellschaft fuer Schwerionenforschung mbH, Planckstr. 1, D-64291 Darmstadt. Phase structure of the Polyakov-quark-meson model. United States: N. p., 2007. Web. doi:10.1103/PHYSREVD.76.074023.
Schaefer, B.-J., Pawlowski, J. M., Wambach, J., & Gesellschaft fuer Schwerionenforschung mbH, Planckstr. 1, D-64291 Darmstadt. Phase structure of the Polyakov-quark-meson model. United States. doi:10.1103/PHYSREVD.76.074023.
Schaefer, B.-J., Pawlowski, J. M., Wambach, J., and Gesellschaft fuer Schwerionenforschung mbH, Planckstr. 1, D-64291 Darmstadt. Mon . "Phase structure of the Polyakov-quark-meson model". United States. doi:10.1103/PHYSREVD.76.074023.
@article{osti_21032350,
title = {Phase structure of the Polyakov-quark-meson model},
author = {Schaefer, B.-J. and Pawlowski, J. M. and Wambach, J. and Gesellschaft fuer Schwerionenforschung mbH, Planckstr. 1, D-64291 Darmstadt},
abstractNote = {The relation between the deconfinement and chiral phase transition is explored in the framework of a Polyakov-loop-extended two-flavor quark-meson (PQM) model. In this model the Polyakov loop dynamics is represented by a background temporal gauge field which also couples to the quarks. As a novelty an explicit quark chemical potential and N{sub f}-dependence in the Polyakov loop potential is proposed by using renormalization group arguments. The behavior of the Polyakov loop as well as the chiral condensate as function of temperature and quark chemical potential is obtained by minimizing the grand canonical thermodynamic potential of the system. The effect of the Polyakov loop dynamics on the chiral phase diagram and on several thermodynamic bulk quantities is presented.},
doi = {10.1103/PHYSREVD.76.074023},
journal = {Physical Review. D, Particles Fields},
number = 7,
volume = 76,
place = {United States},
year = {Mon Oct 01 00:00:00 EDT 2007},
month = {Mon Oct 01 00:00:00 EDT 2007}
}