Cancellation of Global Anomalies in Spontaneously Broken Gauge Theories

TL;DR

This paper explores how to cancel global gauge anomalies in theories with spontaneously broken symmetries, extending known methods for local anomalies, and demonstrates this in a six-dimensional standard model extension.

Contribution

It generalizes anomaly cancellation methods to global anomalies in spontaneously broken gauge theories and applies this to a six-dimensional standard model extension.

Findings

Global anomalies can be canceled using extended procedures.

Application demonstrated in a six-dimensional standard model.

Provides a framework for anomaly cancellation in higher-dimensional theories.

Abstract

We discuss the generalization to global gauge anomalies of the familiar procedure for the cancellation of local gauge anomalies in effective theories of spontaneously broken symmetries. We illustrate this mechanism in a recently proposed six-dimensional extension of the standard model.