Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2011-01-28
Physics
High Energy Physics
High Energy Physics - Lattice
7 pages, 6 figures, poster presented at the XXVIII International Symposium on Lattice Field Theory, June 14-19 2010, Villasimi
Scientific paper
We study scaling behavior of a chiral order parameter performing a simulation of two-flavor QCD with improved Wilson quarks. It has been shown that the scaling behavior of the chiral order parameter defined by a Ward-Takahashi identity agrees with the scaling function of the three-dimensional O(4) spin model at zero chemical potential. We extend the scaling study to finite density QCD. Calculating derivatives of the chiral order parameter with respect to the chemical potential in two-flavor QCD, the scaling property of chiral phase transition is discussed in the low density region. We moreover calculate the curvature of the phase boundary of the chirl phase transition in the temperature and chemical potential plane assuming the O(4) scaling relation.
Aoki Sadao
Ejiri Shinji
Hatsuda Tetsuo
Kanaya Kazuyuki
Maezawa Yuu
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