String Theory Seminar

In this talk I will discuss a new constructive approach for classifying and finding integrable models. By using our method we have found new integrable models in fields ranging from string theory to condensed matter systems. I will discuss some of our new models and applications to for example AdS/CFT.

I will describe how to consider the flat space limit of scattering in AdS relative to a point (where scattering occurs). The kinematics is related to the Wigner-Inonu contraction. In particular, I will discuss how to take the proper limits of wave functions in AdS (times extra dimensions) to understand a notion of in states and out states and how a scattering amplitude should be conceived.  This will make use of the embedding formalism, where the description of these wave functions is simple. I will show how these wave functions are related to other constructions in AdS/CFT and suggest how the Mellin parameters of these other setups arise from integral representations of the wave functions in terms of Schwinger parameters.