Defect CFT techniques in the 6d $\mathcal{N} = (2,0)$ theory

Understand

Surface operators are among the most important observables of the 6d $\mathcal{N} = (2,0)$ theory.

• Here we apply the tools of defect CFT to study local operator insertions into the 1/2-BPS plane.
• We first relate the 2-point function of the displacement operator to the expectation value of the bulk stress tensor and translate this relation into a constraint on the anomaly coefficients associated with the defect.
• Secondly, we study the defect operator expansion of the stress tensor multiplet and identify several new operators of the defect CFT.