| Cumulants in the 3-dimensional Ising,O（2） and O（4） spin models |
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| 作者姓名： | 潘雪 陈丽珠 陈晓松 吴元芳 |
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| 作者单位： | 1 Key Laboratory of Quark and Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal University, Wuhan 430079, China;;2 Institute of Theoretial Physics, Chinese Academy of Sciences, Beijing 100190, China |
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| 基金项目： | Supported by National Natural Sciettce Foundation of China （10835005）, MOE of China （IRT0624, B08033） and Laboratory of Quark and Lepton Physics （MOE） and Institute of Particle Physics, Central China Normal University, Wuhan 430079. China （QLPL201303） |
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| 摘 要： | Based on the universal properties of a critical point in different systems and that the QCD phase transitions fall into the same universality classes as the 3-dimensional Ising, O（2） or O（4） spin models, the critical behavior of cumulants and higher cumulant ratios of the order parameter from the three kinds of spin models is studied. We found that all higher cumulant ratios change dramatically the sign near the critical temperature. The qualitative critical behavior of the same order cumulant ratio is consistent in these three models.
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| 关 键 词： | 旋转模型 累积量 3维 临界行为 动力学相变 自旋模型 临界温度 比例 |
| 收稿时间： | 2013-03-05 |
| 修稿时间： | 2013-06-27 |
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