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arXiv 1407.6469hep-phhep-lathep-thnucl-th
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从微扰理论研究SU(N)理论的退禁闭跃迁

Deconfinement transition in SU(N) theories from perturbation theory

U. Reinosa, J. Serreau, M. Tissier, N. Wschebor

摘要:

本文考虑SU($N$)Yang-Mills理论中Landau-DeWitt规范的简单大质量推广。我们计算了有限温度下时间背景胶子场相应的单圈有效势。在这个顺序的背景场是简单地与波利雅科夫环,序参量的解除限制过渡。我们的微扰计算正确地描述了低温下的夸克禁闭相和$N=2$的二级相变和$N=3$的弱一级相变。我们的转变温度的估计是在定性与晶格模拟或从其他连续方法的值。最后,我们讨论了有效胶子质量参数与Landau-DeWitt规范的Gribov模糊性的关系。

英文摘要:

We consider a simple massive extension of the Landau-DeWitt gauge for SU($N$) Yang-Mills theory. We compute the corresponding one-loop effective potential for a temporal background gluon field at finite temperature. At this order the background field is simply related to the Polyakov loop, the order parameter of the deconfinement transition. Our perturbative calculation correctly describes a quark confining phase at low temperature and a phase transition of second order for $N=2$ and weakly first order for $N=3$. Our estimates for the transition temperatures are in qualitative agreement with values from lattice simulations or from other continuum approaches. Finally, we discuss the effective gluon mass parameter in relation to the Gribov ambiguities of the Landau-DeWitt gauge.

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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