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arXiv · hep-ph/9512375

Chiral Symmetry Restoration at Finite Temperature and Chemical Potential in the Improved Ladder Approximation

Yusuke Taniguchi·Yuhsuke Yoshida
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Abstract

The chiral symmetry of QCD is studied at finite temperature and chemical potential using the Schwinger-Dyson equation in the improved ladder approximation. We calculate three order parameters; the vacuum expectation value of the quark bilinear operator, the pion decay constant and the quark mass gap. We have a second order phase transition at the temperature $T_c=169$ MeV along the zero chemical potential line, and a first order phase transition at the chemical potential $μ_c=598$ MeV along the zero temperature line. We also calculate the critical exponents of the three order parameters.

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Yusuke Taniguchi, Yuhsuke Yoshida. 1995-12-20. Chiral Symmetry Restoration at Finite Temperature and Chemical Potential in the Improved Ladder Approximation. https://doi.org/10.1103/physrevd.55.2283

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