Possibility of QCD critical point sweep during black hole formation
Possibility of QCD critical point sweep during black hole formation
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DOI：
10.1016/j.physletb.2011.09.018
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发表时间：
2011-02
影响因子：
4.4
通讯作者：
A. Ohnishi;H. Ueda;T. Nakano;M. Ruggieri;U. K.SumiyoshiKyoto;Yukawa Inst.;Kyoto;U. Kyoto;N. C. Tech.
中科院分区：
文献类型：
--
作者：
A. Ohnishi;H. Ueda;T. Nakano;M. Ruggieri;U. K.SumiyoshiKyoto;Yukawa Inst.;Kyoto;U. Kyoto;N. C. Tech.
讨论了在大质量星星引力坍缩过程中，当温度和重子化学势分别达到T <$90 MeV和μB <$1300 MeV时，探测黑洞动力学形成过程中QCD临界点的可能性.与手征有效模型中的相边界相比较表明，夸克物质很可能在视界形成之前形成。此外，在黑洞形成过程中可以探测到QCD临界点。在非对称核物质中，临界点向低温方向移动，在某些手征模型中，临界点位于黑洞形成过程中的可达区域。
We discuss the possibility to probe the QCD critical point during the dynamical black hole formation from a gravitational collapse of a massive star, where the temperature and the baryon chemical potential become as high as T∼90 MeV and μB∼1300 MeV. Comparison with the phase boundary in chiral effective models suggests that quark matter is likely to be formed before the horizon is formed. Furthermore, the QCD critical point may be probed during the black hole formation. The critical point is found to move in the lower temperature direction in asymmetric nuclear matter, and in some of the chiral models it is found to be in the reachable region during the black hole formation processes.