论文标题
协变量繁殖器和手性能力计数
Covariant propagator and chiral power counting
论文作者
论文摘要
在手性有效理论中，使用协方差式传播器重新审视了一些带有一个和两个外部重子/核子的单循环图。我们表明，将所有违反手性力量计数的本地术语分开并减去恢复手性能计数的所有本地术语就足够了，无需引入额外的操作。只要所有颗粒都采用协变量传播器，领先的手性校正和IR增强或阈值效应的结构是“稳定”或持续存在的。
Some one-loop diagrams with one and two external baryons/nucleons are revisited using covariant baryon propagators in chiral effective theory. We showed that it is enough to separate and subtract all the local terms that violate chiral power counting to recover chiral power counting, no need to introduce extra operations. The structures of leading chiral corrections and IR enhancement or threshold effects are 'stable' or persist as long as covariant propagators are employed for all particles.
