Surface defects in four-dimensional superconformal theories and chiral algebras

by Madalena Lemos (CERN)

Thursday 2 Apr 2020, 14:00 → 15:00 Europe/Stockholm

Fysikum equipment

We study BPS surface defects in 4d superconformal field theories and show how symmetries constrain their anomaly coefficients. Focusing on N=(2,2) surface defects we review the protected subsector captured by a two-dimensional chiral algebra. We study the properties of the defect in this subsector and discuss how to compute the aforementioned anomaly coefficients.