Twisted D-branes of the SU(N)K WZW model and level-rank duality
Abstract
We analyze the level-rank duality of omegac-twisted D-branes of SU(N)K (when N and K>2). When N or K is even, the duality map involves Z2-cominimal equivalence classes of twisted D-branes. We prove the duality of the spectrum of an open string stretched between omegac-twisted D-branes, and ascertain the relation between the charges of level-rank-dual omegac-twisted D-branes.
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