Quantization of Gauge Theories with Anomalies

TL;DR

This paper reviews the handling of anomalous gauge theories, highlighting recent progress in bypassing global anomalies during canonical quantization, which previously obstructed quantization in certain gauges.

Contribution

It introduces new insights into bypassing global anomalies in gauge theories during canonical quantization, expanding understanding of anomaly management.

Findings

Global anomalies can be bypassed in canonical quantization.

Handling local anomalies is well-understood.

Recent methods allow quantization despite global anomalies.

Abstract

In this talk, we briefly review the basic concepts of anomalous gauge theories. It has been known for some time how theories with local anomalies can be handled. Recently it has been pointed out that global anomalies, which obstruct the quantization of certain gauge theories in the temporal gauge, get bypassed in canonical quantization.