Abstract
In the framework of Dyson-Schwinger equation (DSE) approach, we propose a chemical potential dependent effective gluon propagator and the quark gap equation is solved with such a gluon propagator. It is found for the first time in DSE approach that with light current quark mass m ≠ 0, the Wigner solution will appear at some chemical potential μ W. Based on this, the chiral phase transition at finite chemical potential is studied and the result shows that it is a first-order phase transition. The results are compared with the known results in the literature.
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Jiang, Y., Chen, H., Sun, WM. et al. Chiral phase transition of QCD at finite chemical potential. J. High Energ. Phys. 2013, 14 (2013). https://doi.org/10.1007/JHEP04(2013)014
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DOI: https://doi.org/10.1007/JHEP04(2013)014