Abstract
Four-dimensional \( \mathcal{N} \) = 2 superconformal quantum field theories contain a subsector carrying the structure of a chiral algebra. Using localization techniques, we show for the free hypermultiplet that this structure can be accessed directly from the path integral on the four-sphere. We extend the localization computation to include supersymmetric surface defects described by a generic 4d/2d coupled system. The presence of a defect corresponds to considering a module of the chiral algebra: our results provide a calculational window into its structure constants.
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Pan, Y., Peelaers, W. Chiral algebras, localization and surface defects. J. High Energ. Phys. 2018, 138 (2018). https://doi.org/10.1007/JHEP02(2018)138
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DOI: https://doi.org/10.1007/JHEP02(2018)138