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Anomalies in orbifold field theories

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arxiv hep-th/0110073 v2 pith:3US2E5VJ submitted 2001-10-08 hep-th hep-ph

C.A. Scrucca , M. Serone , L. Silvestrini , F. Zwirner This is my paper · ORCID
classification hep-thhep-ph
keywords anomaliesfieldgaugemodelsorbifoldcancellationtheoryanomaly
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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 S^1/(Z_2 x Z_2'). 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 the implications for realistic supersymmetric models with a single Higgs hypermultiplet in the bulk, and possible cancellation mechanisms in non-minimal models.

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  1. Are there minimal exceptional aGUTs from stable 5D orbifolds?

    hep-ph 2025-01 conditional novelty 7.0 of 10

    Stable 5D orbifold breakings of exceptional gauge groups never yield just the Standard Model gauge group, ruling out minimal exceptional asymptotic GUTs.

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