作为后禁闭区指示的纵向和横向胶子子算符的差异
The Difference between the Longitudinal and Transverse Gluon Propagators as an Indicator of the Postconfinement Domain
摘要：
我们数值研究了SU（2）和SU（3）胶子动力学中纵向和横向胶子传播子之差$Δ=D_L-D_T$与$T\gtrsim T_c$动量和温度的关系。结果发现，积分的$Δ$相对于3-动量是敏感的红外动力学，并显示出实质性的相关性与Polyakov环。在$T=T_p\sim 1.2 T_c$，它改变了符号，给出了$T_p$可以作为后限制域的边界的一些证据。
英文摘要：
We study numerically the dependence of the difference between the longitudinal and transverse gluon propagators, $Δ=D_L-D_T$, on the momentum and temperature at $T\gtrsim T_c$ both in SU(2) and SU(3) gluodynamics. It is found that the integral of $Δ$ with respect to the 3-momentum is sensitive only to infrared dynamics and shows a substantial correlation with the Polyakov loop. At $T=T_p\sim 1.2 T_c$ it changes sign giving some evidence that $T_p$ can serve as a boundary of the postconfinement domain.
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