SU(N) global gauge anomalies in even dimensions.
SU(N) global gauge anomalies in even dimensions.
复制标题
SU(N) 偶数维度的全局规范异常。
DOI:
10.1103/physrevd.37.1655
复制
发表时间:
1988
期刊:
影响因子:
--
通讯作者:
R. Marshak
中科院分区:
文献类型:
--
作者:
Susumu Okubo;Huazhong Zhang;Y. Tosa;R. Marshak
Assuming that the representations of the SU(N) (N = n,n-1) gauge groups in (D = 2n)-dimensional space are chosen to be free of local (perturbative) anomalies, i.e., Tr F/sup n//sup +1/ = 0, the following is proved by group theory: (1) For SU(n), there will be no global (nonperturbative) gauge anomalies in D = 4k+2 and at most Z/sub 2/ global anomalies in D = 4k and (2) for SU(n-1), there exist no global gauge anomalies if D = 2ngreater than or equal to6. The topological argument is given for why, for any gauge group, the global anomaly is at most Z/sub 2/ and in D = 4k+2 no global gauge anomalies exist for a self-contragredient representation.