Symmetry breaking boundary conditions and WZW orbifolds

• DOI: 10.4310/atmp.1999.v3.n3.a8
• Publication Date: 2016-03-01T21:53:49Z
• Authors: Lothar Birke; Jürgen Fuchs; Christoph Schweigert
• Keywords: Orbifold; Reflection

Symmetry breaking boundary conditions for WZW theories are discussed.We derive explicit formulae the reflection coefficients in presence of that preserve only an orbifold subalgebra with respect to involutive automorphism chiral algebra.The characters and modular transformations corresponding computed.Both inner outer automorphisms treated.