High Energy Theory Seminar

A supersymmetric sector of N=(0,2) theories in two dimensions defined by taking the cohomology of one of the supercharges is known to carry the structure of a chiral algebra. I will talk about some general and more concrete properties of such algebras. Based on supersymmetry only, it is possible to argue that this algebra is an RG-invariant. Therefore it carries information about a CFT to which the theory flows in the IR (if there is any). In theories possessing a non-anomalous R-symmetry current, one can also explicitly describe a stress-energy tension in the cohomology. We will concentrate on N=(0,2) Landau-Ginzburg models (including N=(2,2) case) and N=(0,2) gauge theories, including theories of Gadde-Gukov-Putrov type.