The General Coset Orbifold Action

TL;DR

This paper extends the general WZW orbifold action to coset orbifolds by gauging with twisted gauge groups, connecting with current-algebraic formulations and providing detailed examples.

Contribution

It introduces a unified action formulation for coset orbifolds by gauging the general WZW orbifold action with twisted gauge groups, bridging to current-algebraic approaches.

Findings

Derived the action formulation for coset orbifolds

Connected orbifold actions with current algebra methods

Worked out detailed large examples

Abstract

Recently an action formulation, called the general WZW orbifold action, was given for each sector of every WZW orbifold. In this paper we gauge this action by general twisted gauge groups to find the action formulation of each sector of every coset orbifold. Connection with the known current-algebraic formulation of coset orbifolds is discussed as needed, and some large examples are worked out in further detail.