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26 January 2021
 
  » arxiv » hep-th/0607247

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Duality and defects in rational conformal field theory
Jürg Fröhlich ; Jürgen Fuchs ; Ingo Runkel ; Christoph Schweigert ;
Date 30 Jul 2006
AbstractWe study topological defect lines in two-dimensional rational conformal field theory. Continuous variation of the location of such a defect does not change the value of a correlator. Defects separating different phases of local CFTs with the same chiral symmetry are included in our discussion. We show how the resulting one-dimensional phase boundaries can be used to extract symmetries and order-disorder dualities of the CFT.
The case of central charge c=4/5, for which there are two inequivalent world sheet phases corresponding to the tetra-critical Ising model and the critical three-states Potts model, is treated as an illustrative example.
Source arXiv, hep-th/0607247
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