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Probing QCD critical point and induced gravitational wave by black hole physics

Rong-Gen CaiSong HeLi LiYuan-Xu Wang
摘要
The Quantum Chromodynamics (QCD) phase diagram involves the behaviors ofstrongly interacting matter under extreme conditions and remains an importantopen problem. Based on the non-perturbative approach from the gauge/gravityduality, we construct a family of black holes that provide a dual descriptionof the QCD phase diagram at finite chemical potential and temperature. Thethermodynamic properties from the model are in good agreement with thestate-of-the-art lattice simulations. We then predict the location of thecritical endpoint and the first-order phase transition line. Moreover, wepresent the energy spectrum of the stochastic gravitational-wave backgroundassociated with the QCD first-order transition, which is found to be detectedby IPTA and SKA, while by NANOGrav with less possibility.
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