Phase Structure of Two-Flavor QCD at Finite Chemical Potential

Jens Braun, Lisa M. Haas, Florian Marhauser, and Jan M. Pawlowski
Phys. Rev. Lett. 106, 022002 – Published 11 January 2011

Abstract

We study the phase diagram of two-flavor QCD at imaginary chemical potentials in the chiral limit. To this end we compute order parameters for chiral symmetry breaking and quark confinement. The interrelation of quark confinement and chiral symmetry breaking is analyzed with a new order parameter for the confinement phase transition. We show that it is directly related to both the quark density as well as the Polyakov loop expectation value. Our analytical and numerical results suggest a close relation between the chiral and the confinement phase transition.

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  • Received 19 August 2009

DOI:https://doi.org/10.1103/PhysRevLett.106.022002

© 2011 The American Physical Society

Authors & Affiliations

Jens Braun1, Lisa M. Haas2,3, Florian Marhauser3,2, and Jan M. Pawlowski2,3

  • 1Theoretisch-Physikalisches Institut, Friedrich-Schiller University Jena, Max-Wien-Platz 1, 07743 Jena, Germany
  • 2Institut für Theoretische Physik, University of Heidelberg, Philosophenweg 16, 62910 Heidelberg, Germany
  • 3ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung, Planckstr. 1, 64291 Darmstadt, Germany

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Vol. 106, Iss. 2 — 14 January 2011

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