Quantum Matrix Models for Simple Current Orbifolds
Abstract
An algebraic formulation of the stringy geometry on simple current orbifolds of the WZW models of type AN is developed within the framework of Reflection Equation Algebras, REAq(AN). It is demonstrated that REAq(AN) has the same set of outer automorphisms as the corresponding current algebra A(1)N which is crucial for the orbifold construction. The CFT monodromy charge is naturally identified within the algebraic framework. The ensuing orbifold matrix models are shown to yield results on brane tensions and the algebra of functions in agreement with the exact BCFT data.
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