Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2009-10-23
Nucl. Phys.B832:323-341, 2010
Physics
High Energy Physics
High Energy Physics - Theory
Added references to quarkyonic triple point; added brief discussion of relation with Hartnoll et al.'s Fermi seasickness; 23 p
Scientific paper
10.1016/j.nuclphysb.2010.02.013
The quark matter phase diagram is believed to contain two distinguished points, lying on the boundary of the Quark-Gluon Plasma phase: a critical point and a triple point. In the holographic ["AdS/QCD"] approach, the region of relatively low chemical potentials around the phase transition near the critical point may be described using generalizations of the Hawking-Page transition. We propose that the \emph{other} QGP phase line, beginning at the triple point and rising towards the region of extremely high temperatures and chemical potentials, is described instead by a non-perturbative string effect discovered by Seiberg and Witten. Using an assumed position for the critical point, we are able to use this proposal to obtain a holographic lower bound on the temperature of the triple point. Combined with Shuryak's upper bound on this temperature, this leads to a rough estimate of the location of the triple point, at a temperature of around 70 MeV, and a chemical potential of about 1100 MeV.
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