Abstract
The chiral symmetry breaking (χsb) is one of the most fundamental problems in QCD. In this paper, we calculate quark condensation analytically in a holographic QCD model dual to the Einstein-Maxwell-Dilaton (EMD) system coupled to a probe scalar field. We find that the black hole phase transition in the EMD system seriously affects χsb. At small chemical potential, χsb behaves as a crossover. For large chemical potential μ > μc, χsb becomes first order with exactly the same transition temperature as the black hole phase transition by a bypass mechanism. The phase diagram we obtained is qualitatively consistent with the recent results from lattice QCD simulations and NJL models.
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Li, MW., Yang, Y. & Yuan, PH. Analytic study on chiral phase transition in holographic QCD. J. High Energ. Phys. 2021, 55 (2021). https://doi.org/10.1007/JHEP02(2021)055
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DOI: https://doi.org/10.1007/JHEP02(2021)055