Physics

The existence of a positive linear functional acting on the space of (differences between) conformal blocks has been shown to rule out regions in the parameter space of conformal field theories (CFTs). We argue that at the boundary of the allowed...

I will describe recent efforts to understand the mediation of supersymmetry breaking in stabilized compactifications of type IIB string theory. By geometrically separating the visible sector from the supersymmetry breaking effects one may hope to...

I consider a class of simple classical dynamical systems which exhibit motion in their lowest-energy states. Their Lagrangians have wrong-sign kinetic terms and their Hamiltonians are multivalued functions of momentum, yet they are amenable to...

In the past three years some aspects of the duality in between representation theory of associative algebras and N=2 supersymmetric theories in four dimensions have proven to be crucial for understanding the so-called BPS-quiver theories. Very...

The application of the holographic AdS/CFT correspondence to condensed matter systems has shown us remarkable new insights into strongly coupled quantum matter. It provides a novel quantum critical origin of superconductivity that lies outside BCS...