Fusion Residues

  title={Fusion Residues},
  author={Kenneth Intriligator},
We discuss when and how the Verlinde dimensions of a rational conformal field theory can be expressed as correlation functions in a topological LG theory. It is seen that a necessary condition is that the RCFT fusion rules must exhibit an extra symmetry. We consider two particular perturbations of the Grassmannian superpotentials. The topological LG residues in one perturbation, introduced by Gepner, are shown to be a twisted version of the SU (N) k Verlinde dimensions. The residues in the… 
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And Handle Squashing*
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