摘要
A non-Abelian finite flavor group G subset of SO(3) can have double covering G' subset of SU(2) such that G not subset of G'. This situation is not contradictory, but quite natural, and we give explicit examples such as G = D(n). G' = Q(2n) and G = T, G' = T'. This observation can be crucial in particle theory model building.
- 出版日期2009-9-7