• Corpus ID: 245650528

Relative Defects in Relative Theories: Trapped Higher-Form Symmetries and Irregular Punctures in Class S

  title={Relative Defects in Relative Theories: Trapped Higher-Form Symmetries and Irregular Punctures in Class S},
  author={Lakshya Bhardwaj and Simone Giacomelli and Max Hubner and Sakura Schafer-Nameki},
A relative theory is a boundary condition of a higher-dimensional topological quantum field theory (TQFT), and carries a non-trivial defect group formed by mutually non-local defects living in the relative theory. Prime examples are 6d N=(2,0) theories that are boundary conditions of 7d TQFTs, with the defect group arising from surface defects. In this paper, we study codimension-two defects in 6d N=(2,0) theories, and find that the line defects living inside these codimension-two defects are… 

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