high energy physics phenomenology

Anomaly flow and anomaly cancellation

arXiv:2606.01829

summary

The paper studies how chiral gauge anomalies in five‑dimensional orbifold models depend on the Aharonov‑Bohm phase and bulk mass parameters, and shows that in a Randall‑Sundrum gauge‑Higgs unification model the total anomaly from all Kaluza‑Klein modes becomes universal and cancels within each generation.

Abstract

In gauge theory on 5D orbifolds the magnitude of chiral anomalies of 4D gauge fields changes with the value of the Aharonov-Bohm (AB) phase in the fifth dimension. Anomaly flows with the AB phase. In particular in the Randall-Sundrum (RS) warped space gauge couplings of 4D fermions depend on bulk mass parameters of 5D fermion multiplets. We show that in the GUT-inspired gauge-Higgs unification model in the RS warped space the total anomalies including contributions of all Kaluza-Klein excited modes of fermions become universal, being independent of the values of the bulk mass parameters of fermions and expressed in terms of the values of and wave functions at the ultraviolet and infrared branes in the RS space. It is shown that cancellation of gauge anomalies is achieved in each generation even for .

36 pages, 12 figures

Topics & keywords

#5d gauge theory#orbifolds#chiral anomalies#randall-sundrum warped space#gauge-higgs unification#anomaly cancellationAharonov-Bohm phaseKaluza-Klein modesbulk mass parametersSO(5)×U(1)×SU(3)warped extra dimensiongauge anomalies
Anomaly flow and anomaly cancellation · wovepaper