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arXiv 0910.4456hep-thgr-qchep-ph
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夸克物质三相点的全息照相

Holography of the Quark Matter Triple Point

Brett McInnes

摘要:

夸克物质相图被认为包含两个不同的点,位于夸克-胶子等离子体相的边界:临界点和三相点。在全息[“AdS/QCD”]方法中,在临界点附近的相变周围的相对低化学势的区域可以使用霍金-佩奇跃迁的概括来描述。我们建议,\emph{other} QGP相线,开始于三相点和上升的区域的极高的温度和化学势,而不是由Seiberg和Witten发现的非微扰弦效应。使用一个假设的临界点的位置,我们能够使用这个建议,以获得一个全息下限的温度的三相点。结合Shuryak对这个温度的上限,这导致了对三相点位置的粗略估计,温度约为70 MeV,化学势约为1100 MeV。

英文摘要:

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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