The U(1)_R symmetry operator of the Klebanov-Witten theory is realized by a non-BPS KK monopole, whose worldvolume action matches the SymTh operator and anomaly coefficients.
$U(1)$ $R$-Symmetry Topological Operators from Branes in Holography
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We study $U(1)$ symmetry generators from wrapped branes in Type IIB string theory and M-theory. Specifically, we construct topological defects for the $R$-symmetry in 4d $\mathcal{N}=1$ and 3d $\mathcal{N}=2$ quantum field theories holographically dual to Sasaki-Einstein compactifications. These are studied using a universal consistent truncation to the gravity multiplet in the bulk theory. We furthermore check these constructions by identifying the objects charged under them, and understanding their origin in the bulk theory.
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R-symmetries, anomalies and non-invertible defects from non-BPS branes
The U(1)_R symmetry operator of the Klebanov-Witten theory is realized by a non-BPS KK monopole, whose worldvolume action matches the SymTh operator and anomaly coefficients.