Comments on the twisted punctures of $A_{\text{even}}$ class S theory

Abstract

We point out that the $\text{USp}$ symmetry associated to a full twisted puncture of a class S theory of type $A_{\text{even}}$ has the global anomaly associated to ${\pi }_4(\text{USp})={\mathbb{Z}}_2$. We discuss manifestations of this fact in the context of the superconformal field theory $R_{2,2N}$ introduced by Chacaltana, Distler and Trimm. For example, we find that this theory can be thought of as a natural ultraviolet completion of an infrared-free $\text{SO}(2N+1)$ gauge theory with $2N$ flavors, whose $\text{USp}(4N)$ symmetry clearly has the global anomaly.

arXiv comment14 pages, 5 figures; v2: minor changes

References in corpus (15)

• N=2 dualities
• Solutions Of Four-Dimensional Field Theories Via M Theory
• Infinite Chiral Symmetry in Four Dimensions
• Webs of (p,q) 5-branes, Five Dimensional Field Theories and Grid Diagrams
• Branes, Superpotentials and Superconformal Fixed Points
• Webs of five-branes and N=2 superconformal field theories
• Nilpotent orbits and codimension-two defects of 6d N=(2,0) theories
• Tinkertoys for Gaiotto Duality
• Central charges of N=2 superconformal field theories in four dimensions
• Tinkertoys for the D_N series
• On S-duality of 5d super Yang-Mills on S^1
• Tinkertoys for the Twisted D-Series
• Consistency Conditions for Fivebrane in M Theory on R^5/Z_2 Orbifold
• Compactifications of 5d SCFTs with a twist
• Seiberg-Witten for $Spin(n)$ with Spinors

Cited by in corpus (14)

• Magnetic quivers for rank 1 theories
• Compactifications of 6d $N=(1,0)$ SCFTs with non-trivial Stiefel-Whitney classes
• Codimension-two defects and Argyres-Douglas theories from outer-automorphism twist in 6d $(2,0)$ theories
• Anomalous Symmetries End at the Boundary
• Defect $a$-Theorem and $a$-Maximization
• Magnetic Lattices for Orthosymplectic Quivers
• A slow review of the AGT correspondence
• Conformal Manifolds and 3d Mirrors of Argyres-Douglas theories
• Argyres-Douglas Theories in Class S Without Irregularity
• Higgs, Coulomb, and Hall-Littlewood
• 3d mirrors of the circle reduction of twisted $A_{2N}$ theories of class $\mathsf{S}$
• Flowing from 16 to 32 Supercharges
• The Hitchhiker's Guide to 4d $\mathcal{N}=2$ Superconformal Field Theories
• A new rank-2 Argyres-Douglas theory