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Phys. Rev. D 72, 034004 (2005) [13 pages]

Phase diagram of neutral quark matter: Self-consistent treatment of quark masses

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Stefan B. Rüster1 *, Verena Werth2 †, Michael Buballa2 ‡, Igor A. Shovkovy3 §,**, and Dirk H. Rischke1 ††
1Institut für Theoretische Physik, J. W. Goethe-Universität, D-60438 Frankfurt am Main, Germany
2Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
3Frankfurt Institute for Advanced Studies, J. W. Goethe-Universität, D-60438 Frankfurt am Main, Germany

Received 18 March 2005; published 5 August 2005

We study the phase diagram of dense, locally neutral three-flavor quark matter within the framework of the Nambu–Jona-Lasinio model. In the analysis, dynamically generated quark masses are taken into account self-consistently. The phase diagram in the plane of temperature and quark chemical potential is presented. The results for two qualitatively different regimes, intermediate and strong diquark coupling strength, are presented. It is shown that the role of gapless phases diminishes with increasing diquark coupling strength.


©2005 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevD.72.034004
DOI: 10.1103/PhysRevD.72.034004
PACS: 12.39.−x, 12.38.Aw, 26.60.+c

* Electronic address: ruester@th.physik.uni-frankfurt.de
† Electronic address: verena.werth@physik.tu-darmstadt.de
‡ Electronic address: michael.buballa@physik.tu-darmstadt.de
§ Electronic address: shovkovy@th.physik.uni-frankfurt.de
** On leave from Bogolyubov Institute for Theoretical Physics, 03143, Kiev, Ukraine.
†† Electronic address: drischke@th.physik.uni-frankfurt.de

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