Speaker
Description
In this talk I will introduce an equivariant deformation of the B model on the sphere with a CY target. The theory is equivariant with respect to azimuthal rotations which have two fixed points, the north and south pole. Equivariance allows for novel observables with an explicit position-dependence on the sphere which have no analogue in the standard B model. For instance, while physical operators in the B model with superpotential are given by the chiral ring, in the equivariant case we can introduce generalised superpotentials such that the theory interpolates between models with different chiral rings. Using localisation we can compute observables like topological metrics and structure constants in the presence of such superpotentials. Finally, I will comment on ongoing work about an equivariant theory which resembles the B model on one pole and the \bar{B} model on the other. This theory does not require a CY target and, among other things, could be used to investigate topological anti-topological fusion.
