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Symmetry breaking boundary conditions and WZW orbifolds

May, 1999

39 pages

Published in:

Adv.Theor.Math.Phys. 3 (1999) 671-726

e-Print:

hep-th/9905038 [hep-th]

DOI:

10.4310/ATMP.1999.v3.n3.a8

Report number:

ETH-TH-99-11

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Abstract:

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

Wess-Zumino-Witten model
boundary condition
symmetry breaking
orbifold
algebra: chiral
transformation: modular
algebra: fusion
group: Weyl
group theory: lattice
charge conjugation

References(23)

Figures(0)

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