Anomalies in orbifold field theories
Anomalies in orbifold field theories
复制标题
轨道场论中的异常现象
DOI:
10.1016/s0370-2693(01)01430-7
复制
发表时间:
2001
影响因子:
4.4
通讯作者:
F. Zwirner
中科院分区:
文献类型:
--
作者:
C. Scrucca;M. Serone;L. Silvestrini;F. Zwirner
We study the constraints on models with extra dimensions arising from local anomaly cancellation. We consider a five-dimensional field theory with a U(1) gauge field and a charged fermion, compactified on the orbifold S1/(Z2×Z2′). We show that, even if the orbifold projections remove both fermionic zero modes, there are gauge anomalies localized at the fixed points. Anomalies naively cancel after integration over the fifth dimension, but gauge invariance is broken, spoiling the consistency of the theory. We discuss their implications for realistic supersymmetric models with a single Higgs hypermultiplet in the bulk, and possible cancellation mechanisms in non-minimal models.