Critical point in the phase diagram of primordial quark-gluon matter from black hole physics
Renato Critelli,Jorge Noronha,Jacquelyn Noronha-Hostler,Jacquelyn Noronha-Hostler,Israel Portillo,Claudia Ratti,Romulo Rougemont +6 more
TLDR
In this paper, the holographic gauge/gravity correspondence is used to map the fluctuations of baryon charge in the dense quark-gluon liquid onto a numerically tractable gravitational problem involving the charge fluctuations of holographic black holes.Abstract:
Strongly interacting matter undergoes a crossover phase transition at high temperatures $T\ensuremath{\sim}{10}^{12}\text{ }\text{ }\mathrm{K}$ and zero net-baryon density. A fundamental question in the theory of strong interactions, QCD, is whether a hot and dense system of quarks and gluons displays critical phenomena when doped with more quarks than antiquarks, where net-baryon number fluctuations diverge. Recent lattice QCD work indicates that such a critical point can only occur in the baryon dense regime of the theory, which defies a description from first principles calculations. Here we use the holographic gauge/gravity correspondence to map the fluctuations of baryon charge in the dense quark-gluon liquid onto a numerically tractable gravitational problem involving the charge fluctuations of holographic black holes. This approach quantitatively reproduces ab initio results for the lowest order moments of the baryon fluctuations and makes predictions for the higher-order baryon susceptibilities and also for the location of the critical point, which is found to be within the reach of heavy-ion collision experiments.read more
Citations
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Lattice QCD and heavy ion collisions: a review of recent progress.
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Cluster Expansion Model for QCD Baryon Number Fluctuations: No Phase Transition at $\mu_B / T < \pi$
TL;DR: In this article, a cluster expansion model was constructed to study baryon number fluctuations in QCD, where the temperature dependent first two coefficients, corresponding to the partial pressures in the B = 1$ and B = 2$ sectors, were the only model input, which was fix by recent lattice data at imaginary baryochemical potential.
References
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Perturbative Quantum Chromodynamics
TL;DR: In this paper, a review of modern perturbative aspects of QCD is critically reviewed from a theoretical as well as phenomenological point of view, including the classical more formal approach of summing leading logs.