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The QCD phase diagram at nonzero quark density

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Abstract

We determine the phase diagram of QCD on the μ − T plane for small to moderate chemical potentials. Two transition lines are defined with two quantities, the chiral condensate and the strange quark number susceptibility. The calculations are carried out on N t =6, 8 and 10 lattices generated with a Symanzik improved gauge and stout-link improved 2+ 1 flavor staggered fermion action using physical quark masses. After carrying out the continuum extrapolation we find that both quantities result in a similar curvature of the transition line. Furthermore, our results indicate that in leading order the width of the transition region remains essentially the same as the chemical potential is increased.

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Authors and Affiliations

  1. Institut für Theoretische Physik, Universität Regensburg, D-93040, Regensburg, Germany

    G. Endrődi

  2. Institute for T heoretical Physics, Eötvös University, H-1117, Budapest, Hungary

    G. Endrődi, Z. Fodor & S. D. Katz

  3. Department of Physics, University of Wuppertal, D-42097, Wuppertal, Germany

    Z. Fodor & and K. K. Szabó

  4. Jülich Supercomputing Center, FZ Jülich, D-52425, Jülich, Germany

    Z. Fodor

Authors
  1. G. Endrődi
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  2. Z. Fodor
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  3. S. D. Katz
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  4. and K. K. Szabó
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Correspondence to S. D. Katz.

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ArXiv ePrint:1102.1356

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Endrődi, G., Fodor, Z., Katz, S.D. et al. The QCD phase diagram at nonzero quark density. J. High Energ. Phys. 2011, 1 (2011). https://doi.org/10.1007/JHEP04(2011)001

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  • DOI: https://doi.org/10.1007/JHEP04(2011)001

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