多夸克算符的集团约化
Cluster reducibility of multiquark operators
摘要：
结果表明，多夸克规范不变算子可以，在一般情况下，被分解成普通强子算子的产品的组合，展示其集群约化。后一种性质抑制了完全紧凑的多夸克束缚态的形成。多夸克算符在描述强子团彼此靠近的位形空间区域中的奇异态时仍然起着至关重要的作用。我们的证明提供了一个统一的观点，多夸克型和分子型的方法发挥互补作用，在规范不变的非局部运营商水平的基础。
英文摘要：
It is shown that the multiquark gauge-invariant operators can, in general, be decomposed into combinations of products of ordinary hadronic operators, exhibiting their cluster reducibility. The latter property inhibits the formation of completely compact multiquark bound states. Multiquark operators still play a crucial role in the description of exotic states in regions of configuration space where the hadronic clusters are close to each other. Our proof gives a foundation for a unified viewpoint, where the multiquark-type and the molecular-type approaches play complementary roles, at the gauge-invariant nonlocal operator level.
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