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arXiv 0708.4146hep-lat
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Z_3 Polyakov环模型与逆Monte-Carlo方法

Z_3 Polyakov Loop Models and Inverse Monte-Carlo Methods

Christian Wozar, Tobias Kaestner, Sebastian Uhlmann, Andreas Wipf, Thomas Heinzl

摘要:

本文研究了有限温度下SU(3)Yang-Mills理论的有效Polyakov圈模型。一个全面的平均场分析的相图进行比较,从蒙特卡罗模拟得到的结果。我们发现一个丰富的相结构,包括铁磁和反铁磁相。由于三临界点的存在,平均场近似与数值结果吻合得很好。二级相变的临界指数与Z_3 Potts模型一致。最后,我们采用逆蒙特卡罗方法来确定有效的耦合,以匹配有效的模型杨米尔斯理论。

英文摘要:

We study effective Polyakov loop models for SU(3) Yang-Mills theory at finite temperature. A comprehensive mean field analysis of the phase diagram is carried out and compared to the results obtained from Monte-Carlo simulations. We find a rich phase structure including ferromagnetic and antiferromagnetic phases. Due to the presence of a tricritical point the mean field approximation agrees very well with the numerical data. Critical exponents associated with second-order transitions coincide with those of the Z_3 Potts model. Finally, we employ inverse Monte-Carlo methods to determine the effective couplings in order to match the effective models to Yang-Mills theory.

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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