Authors: Dimitrios Manolopoulos Ingo Runkel
Publish Date: 2009/12/02
Volume: 295, Issue: 2, Pages: 327-362
Abstract
Starting from an abelian rigid braided monoidal category mathcalC we define an abelian rigid monoidal category mathcalC F which captures some aspects of perturbed conformal defects in twodimensional conformal field theory Namely for V a rational vertex operator algebra we consider the chargeconjugation CFT constructed from V the Cardy case Then mathcalC = rm RepV and an object in mathcalC F corresponds to a conformal defect condition together with a direction of perturbation We assign to each object in mathcalC F an operator on the space of states of the CFT the perturbed defect operator and show that the assignment factors through the Grothendieck ring of mathcalC F This allows one to find functional relations between perturbed defect operators Such relations are interesting because they contain information about the integrable structure of the CFT
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