Abstract
We discuss the topological sigma model on an orbifold target space. We describe the moduli space of classical minima for computing correlation functions involving twisted operators, and show, through a detailed computation of an orbifold ofCP 1 by the dihedral groupD 4, how to compute the complete ring of observables. Through this procedure, we compute all the rings of dihedralCP 1 orbifolds. We then considerCP 2/D 4, and show how the techniques of topologicalanti-topological fusion might be used to compute twist field correlation functions for nonabelian orbifolds.
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Communicated by N.Yu. Reshetikin
Supported in part by Fannie and John Hertz Foundation
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Zaslow, E. Topological orbifold models and quantum cohomology rings. Commun.Math. Phys. 156, 301–331 (1993). https://doi.org/10.1007/BF02098485
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DOI: https://doi.org/10.1007/BF02098485