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Twisted brane charges for non-simply connected groups

Matthias R Gaberdiel, Terry Gannon

hep-tharXiv:hep-th/0610304

Abstract

The charges of the twisted branes for strings on the group manifold SU(n)/Zd are determined. To this end we derive explicit (and remarkably simple) formulae for the relevant NIM-rep coefficients. The charge groups of the twisted and untwisted branes are compared and found to agree for the cases we consider.

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