论文标题
$ a_0 $凝结，尼尔森的身份和有效的订单参数潜力
$A_0$ condensation, Nielsen's identity and effective potential of order parameter
论文作者
论文摘要
在高温SU（2）Gluodynemics中，研究了零分量量规势势A_0 = CONS的凝结，并研究了其固定量的依赖性。 A_0与Polyakov的循环<l>相互关联。双环有效电位W（A_0，XI）在背景相对论R_XI仪表中重新计算。它取决于参数XI，具有非平凡的最小值，并满足Nielsen的身份。这些迹象意味着冷凝现象的仪表不变性。 遵循Belyaev的想法，我们用<l>来表达W（A_0，XI）。获得的订单参数的有效潜力与该作者得出的参数不同。它独立于XI，并且具有非平凡的最低位置。因此，随后是A_0缩合。我们表明，与A_0和（A_0）| _（经典）相关的方程与（a）$ - 平原中的特殊特征轨道相吻合，W（a）$ - 普通的w（a_0，xi）与xi无关。通过这种方式，建立了这两个规格不变描述之间的链接。计算Polyakov环的最小值。给出了与其他作者的结果进行比较。
In high temperature SU(2) gluodynamics, the condensation of the zero component gauge field potential A_0 =const and its gauge-fixing dependence are investigated. A_0 is mutually related with Polyakov's loop <L>. The two-loop effective potential W(A_0,xi) is recalculated in the background relativistic R_xi gauge. It depends on the parameter xi, has a nontrivial minimum and satisfies Nielsen's identity. These signs mean gauge invariance of the condensation phenomenon. Following the idea of Belyaev, we express W(A_0,xi) in terms of <L>. The obtained effective potential of order parameter differs from that derived by this author. It is independent of xi and has a nontrivial minimum position. Hence the A_0 condensation follows. We show that the equation relating A_0 and (A_0)|_(classical) coincides with the special characteristic orbit in the (A)$-plain along which the W(A_0,xi) is xi-independent. In this way the link between these two gauge invariant descriptions is established. The minimum value of the Polyakov loop is calculated. Comparison with results of other authors is given.
