Abstract
We study the supersymmetric partition function on S1 × L(r, 1), or the lens space index of four-dimensional \( \mathcal{N}=2 \) superconformal field theories and their connection to two-dimensional chiral algebras. We primarily focus on free theories as well as ArgyresDouglas theories of type (A1, Ak) and (A1, Dk). We observe that in specific limits, the lens space index is reproduced in terms of the (refined) character of an appropriately twisted module of the associated two-dimensional chiral algebra or a generalized vertex operator algebra. The particular twisted module is determined by the choice of discrete holonomies for the flavor symmetry in four-dimensions.
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Fluder, M., Song, J. Four-dimensional lens space index from two-dimensional chiral algebra. J. High Energ. Phys. 2018, 73 (2018). https://doi.org/10.1007/JHEP07(2018)073
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DOI: https://doi.org/10.1007/JHEP07(2018)073