HET Seminar at IAS | Erich Poppitz, University of Toronto | “’t Hooft Anomalies, High-T, and Low-T Domain Walls in Adjoint Fermion Theories with (or without) Supersymmetry”

Mon, Dec 10, 2018, 2:30 pm
Bloomberg Lecture Hall

We study t Hooft anomalies of 1-form and 0-form symmetries in SU(N) gauge theories with adjoint fermions, focusing on the rich worldvolume physics of domain walls mandated by anomaly inflow. In two semiclassical regimesone of the high-T theory, and the other where the theory is compactified on a small spatial circle (with periodic boundary conditions on the fermions)we elucidate the physical mechanisms for saturating the anomaly. This reveals interesting similarities between low- and high-temperature phases and explains, within semiclassical QFT, the mechanism behind phenomena first found using string-theoretic tools.