Marginal operators and supersymmetry enhancement in 3d $S$-fold SCFTs

Understand

The study of exactly marginal deformations of superconformal field theories is a topic that has received considerable attention due to their rich properties.

• We investigate the $\mathcal{N}=2$ preserving exactly marginal operators of 3d $S$-fold SCFTs.
• Two families of such theories are considered: one is constructed by gauging the diagonal flavour symmetry of the $T(U(2))$ and $T(U(3))$ theories, and the other by gauging the diagonal flavour symmetry of the $T^{[2,1^2]}_{[2,1^2]}(SU(4))$ theory.
• In both families, it is possible to turn on a Chern--Simons level for each gauge group and to couple to each theory various numbers of hypermultiplets.