Localized tadpoles and anomalies in 6D orbifolds

TL;DR

This paper reviews the effects of localized tadpoles and anomalies in 6D orbifold gauge theories, highlighting supersymmetry preservation, spontaneous localization, and non-decoupling of massive modes.

Contribution

It provides a detailed analysis of FI tadpoles, supersymmetry, and anomaly cancellation in 6D orbifold models, extending understanding beyond 5D cases.

Findings

Supersymmetry remains unbroken despite localized tadpoles.

Bulk zero modes undergo spontaneous localization.

Massive modes do not decouple as in 5D scenarios.

Abstract

In this talk, we review the instability due to radiatively induced FI tadpoles in ${\cal N}=2$ supersymmetric gauge theories on orbifolds in six dimensions. Even with the localized FI tadpoles, we have the unbroken supersymmetry at the expense of having the spontaneous localization of bulk zero mode. We find the non-decoupling of massive modes unlike the 5D case. We also comment on the local anomaly cancellation.