arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1912.01705hep-lat
收藏

高温膨胀的杨-米尔斯解除禁闭相变

The Yang-Mills deconfinement transition from a high temperature expansion

Jangho Kim, Anh Quang Pham, Owe Philipsen, Jonas Scheunert

摘要:

高温膨胀是统计力学中研究临界现象的一种分析工具。我们将这种方法应用于Polyakov圈的三维有效理论,这些理论是由四维格点Yang-Mills的强耦合展开导出的。特别是,波利雅科夫回路磁化率计算为幂级数的有效耦合。然后,Padé分析提供了有效理论中相变的位置,该位置可以映射回4d Yang-Mills的参数。我们的纯分析结果的临界耦合$β_c(N_τ)$同意优于$10\%$与那些从蒙特卡罗模拟。对于$SU(2)$的情况,临界指数$γ$也被准确地预测,而对于$SU(3)$的一阶性质不能通过Padé分析来识别。该方法可以推广到包括费米子和有限密度。

英文摘要:

The high temperature expansion is an analytical tool to study critical phenomena in statistical mechanics. We apply this method to 3d effective theories of Polyakov loops, which have been derived from 4d lattice Yang-Mills by means of resummed strong coupling expansions. In particular, the Polyakov loop susceptibility is computed as a power series in the effective couplings. A Padé analysis then provides the location of the phase transition in the effective theory, which can be mapped back to the parameters of 4d Yang-Mills. Our purely analytical results for the critical couplings $β_c(N_τ)$ agree to better than $10\%$ with those from Monte Carlo simulations. For the case of $SU(2)$, also the critical exponent $γ$ is predicted accurately, while a first-order nature as for $SU(3)$ cannot be identified by a Padé analysis. The method can be generalized to include fermions and finite density.

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。

↑