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Phys. Rev. Lett. 103, 052003 (2009) [4 pages]

Deconfinement Phase Transition and the Quark Condensate

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Christian S. Fischer
Institut für Kernphysik, Technische Universität Darmstadt, Schlossgartenstraße 9, D-64289 Darmstadt, Germany and GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1 D-64291 Darmstadt, Germany

Received 23 April 2009; published 31 July 2009

We study the dual quark condensate as a signal for the confinement-deconfinement phase transition of QCD. This order parameter for center symmetry has been defined recently by Bilgici et al. within the framework of lattice QCD. In this work we determine the ordinary and the dual quark condensate with functional methods using a formulation of the Dyson-Schwinger equations for the quark propagator on a torus. The temperature dependence of these condensates serves to investigate the interplay between the chiral and deconfinement transitions of quenched QCD.

© 2009 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.103.052003
DOI:
10.1103/PhysRevLett.103.052003
PACS:
12.38.Aw, 11.10.Wx, 12.38.Lg