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

Cai, Rong-Gen; He, Song; Li, Li; Wang, Yuanxu

doi:10.48550/arxiv.2201.02004

Cited by 3 publications

(6 citation statements)

References 60 publications

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“…The recent EMD model of Ref. [72] also produces a good quantitative agreement with the latest lattice QCD results at finite µ B from Ref. [41], which looks competitive with ours [34,43], even though it predicts a CEP at a significantly different location in the phase diagram: (T c , µ c B ) ∼ (105, 558) MeV.…”

Section: The Holographic Emd Modelsupporting

confidence: 70%

“…[34] had been the first effective model in the literature to be shown to correctly predict the behavior of QCD thermodynamics at finite baryon density (indeed, 4 years before the publication of the latest lattice QCD results from Ref. [41]), very recently another successful and similar EMD model [72] has been proposed with a different set of free parameters. The EMD model of Ref.…”

Section: The Holographic Emd Modelmentioning

confidence: 99%

“…The EMD model of Ref. [72] was matched at zero baryon density to the lattice 2 that were chosen to characterize the crossover region, and the line of first-order phase transitions ending at the CEP. Bottom panel: normalized energy density as a function of the temperature for different values of µB/T and its comparison with state-ofthe-art lattice QCD results from [41].…”

Section: The Holographic Emd Modelmentioning

confidence: 99%

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Transport coefficients of the quark-gluon plasma at the critical point and across the first-order line

Grefa,

Hippert,

Noronha

et al. 2022

Preprint

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A bottom-up Einstein-Maxwell-Dilaton holographic model is used to compute, for the first time, the behavior of several transport coefficients of the hot and baryon-rich strongly coupled quark-gluon plasma at the critical point and also across the first-order phase transition line in the phase diagram. The observables under study are the shear and bulk viscosities, the baryon and thermal conductivities, the baryon diffusion, the jet quenching parameter q, as well as the heavy-quark drag force and the Langevin diffusion coefficients. These calculations provide a phenomenologically promising estimate for these coefficients, given that our model quantitatively reproduces lattice QCD thermodynamics results, both at zero and finite baryon density, besides naturally incorporating the nearly-perfect fluidity of the quark-gluon plasma. We find that the diffusion of baryon charge, and also the shear and bulk viscosities, are suppressed with increasing baryon density, indicating that the medium becomes even closer to perfect fluidity at large densities. On the other hand, the jet quenching parameter and the heavy-quark momentum diffusion are enhanced with increasing density. The observables display a discontinuity gap when crossing the first-order phase transition line, while developing an infinite slope at the critical point. The transition temperatures associated with different transport coefficients differ in the crossover region but are found to converge at the critical point.

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Section: The Holographic Emd Modelsupporting

confidence: 70%

Section: The Holographic Emd Modelmentioning

confidence: 99%

Section: The Holographic Emd Modelmentioning

confidence: 99%

See 1 more Smart Citation

Transport coefficients of the quark-gluon plasma at the critical point and across the first-order line

Grefa,

Hippert,

Noronha

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…In fact, very recently another competing EMD model has been proposed in Ref. [41], which also displays a good quantitative agreement with the state-of-the-art lattice QCD data at finite baryon density from Ref. [36], although predicting the location of the QCD CEP at a significantly different location in the phase diagram.…”

Section: Concluding Remarks and Perspectivesmentioning

confidence: 59%

“…The different holographic CEP's predicted in Refs. [29] and [41] lie in regions of the QCD phase diagram which are not covered by current lattice simulations. In this regard, it would be interesting to have lattice results for larger values of µ B and lower values of T in order to test such holographic predictions using first principles QCD results -however, this may be a very hard task to accomplish on the lattice due to the fermion sign problem.…”

Section: Concluding Remarks and Perspectivesmentioning

confidence: 92%

Holographic thermodynamics and transport for the hot and baryon dense quark-gluon plasma

Rougemont

2022

J. Phys.: Conf. Ser.

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This is a contribution to the Proceedings of the XLIV Brazilian Workshop on Nuclear Physics, held in virtual format during 9-11 November, 2021. In this contribution I briefly review some of the main results obtained with collaborators regarding quantitative predictions from an Einstein-Maxwell-Dilaton holographic model for the thermodynamics and some of the transport coefficients of the hot and baryon dense quark-gluon plasma produced in relativistic heavy ion collisions.

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Meson excitation time as a probe of holographic critical point

Hajilou

2023

Eur. Phys. J. C

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We study the time evolution of expectation value of Wilson loop as a non-local observable in a strongly coupled field theory with a critical point at finite temperature and nonzero chemical potential, which is dual to an asymptotically AdS charged black hole via gauge/gravity duality. Due to inject of energy into the plasma, the temperature and a chemical potential increase to finite values and the plasma experiences an out-of-equilibrium process. By defining meson excitation time $$t_{ex}$$ t ex as a time at which the meson falls into the final excited state, we investigate the behavior of $$t_{ex}$$ t ex near the critical point as the system evolves towards the critical point. We observe that by increasing the interquark distance the dynamical critical exponent increases smoothly. Also, we obtain for slow quenches different values of the dynamical critical exponent, although for fast quenches our result for the dynamical critical exponent is in agreement with the one that is reported for studying the quasi-normal modes. Consequently, this indicates that in this model for fast quenches and small values of interquark distances the gauge invariant Wilson loop is a good non-local observable to probe the critical point.

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

Cited by 3 publications

References 60 publications

Transport coefficients of the quark-gluon plasma at the critical point and across the first-order line

Transport coefficients of the quark-gluon plasma at the critical point and across the first-order line

Holographic thermodynamics and transport for the hot and baryon dense quark-gluon plasma

Meson excitation time as a probe of holographic critical point

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