论文标题
对称恢复和Landau仪表中的Gluon质量
Symmetry restoration and the gluon mass in the Landau gauge
论文作者
论文摘要
我们研究了landau仪表中阳米尔斯理论中Gluon筛选质量的产生。我们提出了一个固定程序，通过将所有重量功能的所有Gribov副本求和来克服Gribov歧义。这可以根据涉及受约束的非线性Sigma模型字段的本地场理论来提出。我们表明，辐射对称性恢复的现象发生在该理论中，类似于标准非线性Sigma模型在二维中发生的情况。如晶格模拟中所见，这会导致非零的Gluon筛选质量。
We investigate the generation of a gluon screening mass in Yang-Mills theory in the Landau gauge. We propose a gauge-fixing procedure where the Gribov ambiguity is overcome by summing over all Gribov copies with some weight function. This can be formulated in terms of a local field theory involving constrained, nonlinear sigma model fields. We show that a phenomenon of radiative symmetry restoration occurs in this theory, similar to what happens in the standard nonlinear sigma model in two dimensions. This results in a nonzero gluon screening mass, as seen in lattice simulations.
