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arXiv · 1610.09981

Susceptibilities from a black hole engineered EoS with a critical point

Israel Portillo
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Abstract

Currently at the Beam Energy Scan at RHIC experimental efforts are being made to find the QCD critical point. On the theoretical side, the behavior of higher-order susceptibilities of the net-baryon charge from Lattice QCD at $μ_{_B}\!=\!0$ may allow us to estimate the position of the critical point in the QCD phase diagram. However, even if the series expansion continues to higher-orders, there is always the possibility to miss the critical point behavior due to truncation errors. An alternative approach is to use a black hole engineered holographic model, which displays a critical point at large densities and matches lattice susceptibilities at $μ_{_B}\!=\!0$. Using the thermodynamic data from this black hole model, we obtain the freeze-out points extracted from the net-protons distribution measured at STAR and explore higher order fluctuations at the lowest energies at the beam energy scan to investigate signatures of the critical point.

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Israel Portillo. 2016-10-31. Susceptibilities from a black hole engineered EoS with a critical point. https://doi.org/10.1088/1742-6596%2F832%2F1%2F012041

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