Exact Results for Loop Operators in 3D N=2 SCFTS

We apply localization techniques to study loop operators in 3D N=2 SCFTs on S^3 supported on great circles. After reviewing the localization formalism, we construct certain "vortex loops", topological defect operators supported on loops in the manifold. We show how their expectation values can be computed by localization, and use this to gain some new insight into dualities.
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