Theoretical Physics Seminar: Iñaki García-Etxebarria (Zoom)

  • Date: –15:15
  • Location: https://uu-se.zoom.us/j/68594920053
  • Lecturer: Iñaki García-Etxebarria
  • Organiser: Vladimir Procházka
  • Contact person: Vladimir Procházka
  • Seminarium

IIB flux non-commutativity and the global structure of field theories

I will discuss the origin of the choice of global structure (or equivalently, the choice for which higher p-form symmetries are present in the theory) for various Lagrangian and non-Lagrangian field theories in terms of their realization in IIB and M-theory. I will explain how this choice on the field theory side can be traced back to the fact that fluxes in string/M-theory do not commute in the presence of torsion. I will illustrate how these ideas provide a stringy explanation for the fact that six-dimensional (2,0) and (1,0) theories generically have a partition vector (as opposed to a partition function) and explain how this reproduces the classification of N=4 theories provided by Aharony, Seiberg and Tachikawa. Time permitting, I will describe how to use these ideas to determine the global structure for the Argyres-Douglas theories, and how this can be used to test recently proposed N=1 Lagrangians for some of these theories.