Archive of IAS Monday High Energy Theory Seminars

TeV scale Wino, provides a possible Dark Matter candidate in the context of the Minimal Supersymmetric Standard Model. Such a dark matter candidate evades all current direct detection and collider bounds and can only be probed through its...

I will review a lattice gauge theory construction of N=4 super-Yang-Mills that has been developed over the last several years. It starts from a "twist" of the original N=4 theory which was explicitly written out by Marcus. This twisted theory is re...

I define and study TQFTs which generalize the Dijkgraaf-Witten TQFT and can be described on a lattice using discrete 1-form and 2-form gauge fields. The gauge group is replaced by a gauge 2-group. It is proposed that 2-group TQFTs classify gapped...

Motivated by the connection between 4-manifolds and 2d N=(0,2) theories, we study the dynamics of a fairly large class of 2d N=(0,2) gauge theories. We see that physics of such theories is very rich, much as the physics of 4d N=1 theories. We...

We show how a diffeomorphism invariance of the quantum Hall systems, together with topological consideration, put strong constraints on the physics that goes beyond the Chern-Simons action. We show how the Hall conductivity at finite wavenumbers is...