לוח שנה משולב

The LHC has uncovered the final piece of the Standard Model, and excluded many of our ideas for physics beyond. The talk will focus on ``where we go from here". We will describe some unconventional reasons to think that supersymmetry may yet play some role, and controlling issues for the scale at which it might appear.

Pincer-ligated iridium complexes have been well demonstrated to act as catalysts for alkane dehydrogenation. Studies of the mechanism and scope of dehydrogenations will be discussed, as well as coupling with secondary reactions (tandem catalysis). In addition, the ability of such complexes to effect the critical step of C-H bond addition is explored and exploited for reactions other than dehydrogenation, such as C-O or C-F bond cleavage, as well as the microscopic reverse, e.g. C-O bond formation.

Starting with a choice of a gauge group in four dimensions, there is often freedom in the choice of magnetic and dyonic line operators. Different consistent choices of these operators correspond to distinct physical theories, with the same correlation functions of local operators in R^4. In some cases these choices are permuted by shifting the theta-angle by 2pi. In other cases they are labeled by new discrete theta-like parameters. Using this understanding we gain new insight into the dynamics of four-dimensional gauge theories and their phases. The existence of these distinct theories clarifies a number of issues in electric/magnetic dualities of supersymmetric gauge theories, both for the conformal N=4 theories and for the low-energy dualities of N=1 theories.