Archive of IAS Monday High Energy Theory Seminars

The central drive of the analytic S-matrix program is to determine scattering amplitudes in any given theory from symmetries and analytic properties. This program led for instance to the birth of string theory with Veneziano's amplitude. Many recent...

The loop approach to quantum gravity has developed considerably during the last few years, especially in its covariant ('spinfoam') version. I present the current definition of the theory and the results that have been proven. I discuss what I...

In 2011, the pace of the Standard Model Higgs search far exceeded expectation. All but a narrow mass window between 122-128 GeV is excluded. At this point only two search channels can provide meaningful insight into resolving this search in 2012....

We review our recent works on the index calculations related to 4d, 5d, and 6d maximally supersymmetric theories, where we have explored the 't Hooft operators, instantons, and monopole string junctions. In addition, we provide a tentative solution...

Matrix models yield a theory of random two dimensional surfaces. They support a 1/N expansion dominated by planar graphs (corresponding to planar surfaces) and undergo a phase transition to a continuum theory. In higher dimensions matrix...