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arXiv 0904.1860hep-ph
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UA(1)手性无规矩阵模型中的破缺和相变

UA(1) breaking and phase transition in chiral random matrix model

T. Sano, H. Fujii, M. Ohtani

摘要:

我们提出了一个手征随机矩阵模型,它适当地纳入了由于\UA(1)异常项的相变的味数依赖。在有限温度下,该模型显示了二阶相变与平均场临界指数的两个无质量的味道,而在三个无质量的味道的情况下,转变原来是一级。拓扑磁化率满足反常的\UA(1)沃德恒等式,并随温度的升高而逐渐减小.

英文摘要:

We propose a chiral random matrix model which properly incorporates the flavor-number dependence of the phase transition owing to the \UA(1) anomaly term. At finite temperature, the model shows the second-order phase transition with mean-field critical exponents for two massless flavors, while in the case of three massless flavors the transition turns out to be of the first order. The topological susceptibility satisfies the anomalous \UA(1) Ward identity and decreases gradually with the temperature increased.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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