Abstract
We carry out a detailed superspace analysis of the OPE of two \( \mathcal{N}=2 \) stress-tensor multiplets. Knowledge of the multiplets appearing in the expansion, together with the two-dimensional chiral algebra description of \( \mathcal{N}=2 \) SCFTs, imply an analytic bound on the central charge c. This bound is valid for any \( \mathcal{N}=2 \) SCFT regardless of its matter content and flavor symmetries, and is saturated by the simplest Argyres-Douglas fixed point. We also present a partial conformal block analysis for the scalar superconformal primary of the multiplet.
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Liendo, P., Ramírez, I. & Seo, J. Stress-tensor OPE in \( \mathcal{N}=2 \) superconformal theories. J. High Energ. Phys. 2016, 19 (2016). https://doi.org/10.1007/JHEP02(2016)019
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DOI: https://doi.org/10.1007/JHEP02(2016)019