基于有限尺寸标度的QCD相变临界点定位
Locating critical point of QCD phase transition basing on finite-size scaling
摘要：
认为在相对论重离子碰撞中，由于形成物质的尺度有限，临界点的可靠判据是有限尺寸标度，而不是可观测的非单调行为。提出了利用有限尺寸标度确定临界点的方法。分析了RHIC/STAR的$\pt$关联数据。在$\sqrt s =62$和200 GeV附近可能观察到临界点。它们可能分别是晶格QCD预言的解除禁闭跃迁和手征对称性恢复。建议用其他可观测能量进一步证实。
英文摘要：
It is argued that in relativistic heavy ion collisions, due to limited size of the formed matter, the reliable criterion of critical point is finite-size scaling, rather than non-monotonous behavior of observable. How to locate critical point by finite-size scaling is proposed. The data of $\pt$ correlation from RHIC/STAR are analyzed. Critical points are likely observed around $\sqrt s =62$ and 200 GeV. They could be, respectively, the transition of deconfinement and chiral symmetry restoration predicted by lattice-QCD. Further confirmation with other observable and energies is suggested.
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