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JHEP, 2012, Volume 1205, 117, 34 pages (Mi jhep17)  

Holographic phase diagram of quark-gluon plasma formed in heavy-ions collisions

I. Ya. Aref'evaa, A. A. Bagrovab, E. O. Pozdeevac

a Steklov Mathematical Institute, Gubkin St. 8, 119991, Moscow, Russia
b Instituut Lorentz, Leiden University, Niels Bohrweg 2, 2300 RA Leiden, Netherlands
c Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Leninskie Gory, GSP-1, 119991, Moscow, Russia

Abstract: We use a holographic dual model for the heavy-ion collision to obtain the phase diagram of the quark-gluon plasma (QGP) formed at a very early stage just after the collision. In this dual model, colliding ions are described by the charged gravitational shock waves. Points on the phase diagram correspond to the QGP or hadronic matter with given temperatures and chemical potentials. The phase of the QGP in dual terms is related to the case where the collision of shock waves leads to the formation of a trapped surface. Hadronic matter and other confined states correspond to the absence of a trapped surface after collision. In the dual language, the multiplicity of the ion collision process is estimated as the area of the trapped surface. We show that a nonzero chemical potential reduces the multiplicity. To plot the phase diagram, we use two different dual models of colliding ions, the pointlike and the wall shock waves, and find that the results agree qualitatively.

Funding Agency Grant Number
Russian Foundation for Basic Research 11-01-00894-a
Dynasty Foundation
Ministry of Education and Science of the Russian Federation 14.740.12.0846
Netherlands Organization for Scientific Research
This work is supported in part by the Russian Foundation for Basic Research (Grant No. 11-01-00894-a). The work of A. A. B. is also supported by the Dynasty Foundation and the Dutch Foundation for Fundamental Research on Matter (FOM). The work of E. O. P. is supported in part by the Russian Ministry of Education and Science (Grant No. 14.740.12.0846).


DOI: https://doi.org/10.1007/JHEP05(2012)117


Bibliographic databases:

Document Type: Article
Received: 22.02.2012
Revised: 25.04.2012
Accepted:29.04.2012
Language: English

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